With an unstoppable global warming, overpopulation, and food and water shortages.

[rjsquirrel]

1. You know that's your perspective

but throughout human history things were much worse.

Until less than 100 years ago 1/3 of all women died in childbirth. Infant mortality was horrendous. Epidemic diseases and wars wiped out whole nations and generations. Humans have known famine and genocide for millennia.

And yet we kept having babies. As do all our fellow creatures on earth. Because we are not here for ourselves. We are here as mere conduits for genetic information, and we are not motivated by reason but by an evolutionarily inherent mandate to push our genetic material into the future.

So your question can only be rhetorical. One could have asked it at any point in history. Why go on? Because we exist only to propagate at a material level.

Everything else about human culture -- Art, politics, religion, science-- is mere elaboration of the drive to reproduce.

ETA my parents lived through decades of fear that Soviet nukes would rain down and our nuclear counterstrike would end all life on earth. Catholics that they were, I'm one of 5 kids. If you don't remember this, some of us do.