'Reality' Keeps Dissolving

Every time I think that I understand life, I keep realizing that I don't know anything. Whatever thing I thought I learned, always turns out to be an illusion. I'm falling into an abyss. Luckily I am not terrified yet, maybe this feeling will come later.

I keep reminding myself that I am simply having the experience of being a self-conscious ape living on a sphere that is orbiting around a star in space. What's the point of anything? Success according to traditions or cultures is an illusion. We humans live under layers of stories taken so seriously.

What is the purpose of my life? It feels like the purpose of my life is to help living things to decrease their suffering, and this would include the planet itself too. I might not have the piece of paper that invites the masses to trust me, but this is what I feel my life purpose is.

How do I continue living in this world of illusions? Everyday I get to watch people around me running around trying to win at some imaginary game that they think is real. I just want to spend time with my family right now, even though they are also caught in the game. 

It feels like I am living in GTA but I am the only person in my city who realizes it. This is a game. It triggers an odd feeling of loneliness mixed with despair. But... this of course triggers the next question... WHO is feeling this loneliness and despair? Is it really me, or just someone I've imagined?