The question sounded really dumb when it came to my mind, but then I thought "well, that's pretty simple, I think."
"Everything is made of things that interact with each other, and I'm here to interact with other things."
For all I know, I am part of a bigger thing (society, humanity, ~some sort of siiiimulaaaaaaation, which is entirely possible~ etc).
What do you think?

And then I reread this, and thought "no, actually. That's pretty dumb."