Funny Why are we Here Joke

Why Are We Here?
So we were lying on our backs on the grass in the park next
to our hamburger wrappers, my 14-year-old son and I,
watching the clouds loiter overhead, when he asked me, “Dad,
why are we here?”
And this is what I said:
“I’ve thought a lot about it, son, and I don’t think it’s
all that complicated. [...]