IMHO the purpose of AS is (and always has been) to evolve and advance humanity, through advances in modelling (physics, mechanics, maths, ...), technology, medicine, and ironically enough, even social advances (better structures of government, economy etc). This unfortunately comes at the cost of our own personal happiness (but hey, you can't take it with you, and in the end we all end up the same way - most AS will only achieve recognition long after we are dead). Human colonization of at least one more planet is probably the next goal (the future of our species is vulnerable on this rock), although machine control of this planet (e.g. via the singularity) to prevent mankind's ego from destroying millions of years of evolution on this planet might be a prerequisite.
To all other AS out there - remember that you are more intelligent than NTs (as you have made the effort to think independently). Their labels only stick if you let these affect you (and FFS do not let them convince you to institutionalize yourselves). In order to function and have influence in society (think jobs, relationships etc), you will need to observe NTs and repeat their behaviours to them. It just takes concentration and practice. Show them what they expect to see. But don't judge them. Forgive them. They are just in their more animal state (as we all can be at times). NT's prefer herd mentality - as long as they don't stick out in society, they believe they will be 'safe'. And despite the drawbacks of AS, their are benefits, too. We are nigh immune to indoctrination, be it religion, consumerism, fashion or politics. Lonely, maybe, but we will never be puppets or zombies. Do not be condescending to NT's - they aren't inferior, they just haven't chosen to remove their blinkers. Respect this choice. Many of us would prefer to take the blue pill given a second bite.
Stop worrying - life is but a game anyway, and the weight of the world should not be on your shoulders. More than anything it is the continual analysis (of the past) and postulation of the future that defines us as AS (and IMHO, more than anything, it is this anxiety which NT's despise about us - we are forcing them to think outside their comfort zone, causing THEM anxiety, hence their repulsion for us). And finally, AS does not necessarily automatically equate to aetheism. Even the mighty intellect of an AS is insufficient to comprehend the complexity of the universe, certainly not individually, and certainly not in our lifetimes. So consider taking on a deity as a placeholder for what you do not, and cannot know in this lifetime. This will provide psychological relief to allow us to focus on one evolutionary step at a time, without unnecessary pressure.