On the regret thing, we don't know what the future will hold for individuals or collectively. Yes, things aren't looking good overall. But what if your kids make massive positive changes to the world as they grow up? (And from what you've said they are heading in a good direction for this.)

I totally understand how some people feel they are improving the world by not having kids. There's a lot of merit to this choice, and I respect that decision. But likewise, a next generation is arguably still needed. And when raised with the right guidance and attitude they can be transformative and help reverse or at least negate some if the bad past generations have done to the world.