One aspect seldom considered is the value of life itself.

> If each of us

Therein lies the consideration. Who is important? Who is "us"?

Are the people living important? Are the people not living important?

I.e. would it be a "bad thing" if you did not exist? I presume you think so. Should we think so?

Would it be a bad thing for another person to not exist? What about a future person?

---

The value, source, and identity of human life gets very religious/philosophical.

My beliefs include human life having intrinsic value, and I therefore would like there to be as many human lives as possible and for those lives to be good as possible.

You'll notice that my conclusion winds up equivalent to the economics notion of "collective utility" (1 + A) * (1 + B). That is true, but I prefer to think of it not as adding more pennies to a global piggy bank, but in a real altruistic sense of maximizing human experience.