Albert Camus famously claimed that the most important philosophical question in existence was whether to commit suicide. I would disagree.
For one, if Open Individualism is true (i.e. that deep down we are all one and the same consciousness) then ending one’s life will not accomplish much. The vast majority of “who you are” will remain intact, and if there are further problems to be solved, and questions to be answered, doing this will simply delay your own progress. So at least from a certain point of view one could argue that the most important question is, instead, the question of personal identity. I.e. Are you, deep down, an individual being who starts existing when you are born and stops existing when you die (Closed Individualism), something that exists only for a single time-slice (Empty Individualism), or maybe something that is one and the same with the rest of the universe (Open Individualism)?
I think that is a very important question. But probably not the most important one. Instead, I’d posit that the most important question is: “What is good, and is there a ground truth about it?”
In the case that we are all one consciousness maybe what’s truly good is whatever one actually truly values from a first-person point of view (being mindful, of course, of the deceptive potential that comes from the Tyranny of the Intentional Object). And in so far as this has been asked, I think that there are two remaining possibilities: Does ultimate value come down to the pleasure-pain axis, or does it come down to spiritual wisdom?
Thus, in this day and age, I’d argue that the most important philosophical (and hence most important, period) question is: “Is happiness a spiritual trick, or is spirituality a happiness trick?”
What would it mean for happiness to be a spiritual trick? Think, for example, of the possibility that the reason why we exist is because we are all God, and God would be awfully bored if It knew that It was all that ever existed. In such a case, maybe bliss and happiness comes down to something akin to “Does this particular set of life experiences make God feel less lonely”? Alternatively, maybe God is “divinely self-sufficient”, as some mystics claim, and all of creation is “merely a plus on top of God”. In this case one could think that God is the ultimate source of all that is good, and thus bliss may be synonymous with “being closer to God”. In turn, as mystics have claimed over the ages, the whole point of life is to “get closer to God”.
Spirituality, though, goes beyond God: Within (atheistic) Buddhism the view that “bliss is a spiritual trick” might take another form: Bliss is either “dirty and a sign of ignorance” (as in the case of karma-generating pleasure) or it is “the results of virtuous merit conducive to true unconditioned enlightenment“. Thus, the whole point of life would be to become free from ignorance and reap the benefits of knowing the ultimate truth.
And what would it mean for spirituality to be a happiness trick? In this case one could imagine that our valence (i.e. our pleasure-pain axis) is a sort of qualia variety that evolution recruited in order to infuse the phenomenal representation of situations that predict either higher or lower chances of making copies of oneself (or spreading one’s genes, in the more general case of “inclusive fitness”). If this is so, it might be tempting to think that bliss is, ultimately, not something that “truly matters”. But this would be to think that bliss is “nothing other than the function that bliss plays in animal behavior”, which couldn’t be further from the truth. After all, the same behavior could be enacted by many methods. Instead, the raw phenomenal character of bliss reveals that “something matters in this universe”. Only people who are anhedonic (or are depressed) will miss the fact that “bliss matters”. This is self-evident and self-intimating to anyone currently experiencing ecstatic rapture. In light of these experiences we can conclude that if anything at all does matter, it has to do with the qualia varieties involved in the experiences that feel like the world has meaning. The pleasure-pain axis makes our existence significant.
Now, why do I think this is the most important question? IF we discover that happiness is a spiritual trick and that God is its source then we really ought to follow “the spiritual path” and figure out with science “what is it that God truly wants”. And under an atheistic brand of spirituality, what we ought to figure out is the laws of valence-charged spiritual energy. For example, if reincarnation and karma are involved in the expected amount of future bliss and suffering, so be it. Let’s all become Bodhisattvas and help as many sentient beings as possible throughout the eons to come.
On the other hand, IF we discover (and can prove with a good empirical argument) that spirituality is just the result of changes in valence/happiness, then settling on this with a high certainty would change the world. For starters, any compassionate (and at least mildly rational) Buddhist would then come along and help us out in the pursuit of creating a pan-species welfare state free of suffering with the use of biotechnology. I.e. The 500 odd million Buddhists world-wide would be key allies for the Hedonistic Imperative (a movement that aims to eliminate suffering with biotechnology).
Recall Dalai Lama’s quote: “If it was possible to become free of negative emotions by a riskless implementation of an electrode – without impairing intelligence and the critical mind – I would be the first patient.” [Dalai Lama (Society for Neuroscience Congress, Nov. 2005)].
If Buddhist doctrine concerning the very nature of suffering and its causes is wrong from a scientific point of view and we can prove it with an empirically verified physicalist paradigm, then the very Buddhist ethic of “focusing on minimizing suffering” ought to compel Buddhists throughout the world to join us in the battle against suffering by any means necessary. And most likely, given the physicalist premise, this would take the form of creating a technology that puts us all in a perpetual pro-social clear-headed non-addictive MDMA-like state of consciousness (or, in a more sophisticated vein, a well-balanced version of rational wire-heading).