For no particular reason, obviously. Nor does there need to be one. Meaning and purpose are intrinsically defined, by each of us.

Where would you be if you weren’t? I suppose I could answer that question starting with the Big Bang? ... the one from the universe, not your parents.

Does first comment get double points?

A pure, remarkable fluke.

Because "life" seeks expression and continuity....ever try to keep grass from coming up in a sidewalk?

Our parents, and their parents fucked up

Maybe it s like being in detention at school; we have to learn to do/behave better - My son watched that film over and over (the breakfast club)

You're parents banged each other. That's why you are here. What you do with that is up to you.

Someone has to do the dishes ...

Because the environment with time, permitted the evolution of this species from other species. We are all cousins, except for the supporters of the President. They are descended from rocks.

We're here because we're here because we're here.

You tell me! I am still looking and open to answers.

"why are we here?"

I think the key word is 'we', we provide the reason for being to each other.

The purpose of life is to find your special purpose. (Bonus points to anyone who's snickering at the "special purpose" reference from one of the best worst films ever.) Seriously though, we're here to figure out why we're here; each of us has something to contribute that is unique to us.

Because we are.

There is no way to provide a factual answer to this question. One can only have beliefs or personal theories.

So, in that case, I'm doing my absolute best to have the greatest time here, within my human ability, while also doing what I can to bring joy, provide comfort, help where or whom I can...

And PRAY I have a water pistol handy next time someone asks this question.

Guess what? You get to make your own life meaningful. Instead of looking externally, look within, consider your values, the type of person you want to be and attempt to live by those values.

My advice would be to look about your own little corner of the world, the people that are in it, and try to make it better, for others and the environment.