I'm not as pessimistic as you about the future, and I don't think of today's children as people passively experiencing things that happen in the world. They're participants, and they'll have a lot more agency about their futures during our lifetimes.
Politically, I still think that fascism is brittle. Competence is actively discouraged (independently competent people are minimized to prevent threats to centralized power), so I think any fascist system is bound to fail when the people actively resist.
Economically, the business cycle ebbs and flows, and whoever's on top today might not be on top tomorrow. I believe the current economic system is dominated by bubbles that have no future, so we're gonna see some future chaos where new bases of power will rise. Good guys can win in those scenarios, and those good guys may very well be my own children.
Culturally, nothing is permanent. Trying to predict things is a fool's errand. Better to just prepare our children for resilience through flexibility and adaptability, and raise them to be kind, well adjusted, socially plugged in.
Living a good life is possible even in a bad world. That's happened throughout human history. And so if people want to raise children, let them.
When a team loses a basketball game by 1 point, literally every missed shot or turnover (or blown defensive coverage leading to an easy basket for the other side or foul leading to made free throws) could be pointed to as the "cause" of that loss.
So yeah, if she were an actual better politician she probably would've won with the cards she was dealt. But there were also dozens of other causes that would've made her (or an alternative candidate) win, all else being equal.
And it's hard to see how a better politician would've ended up in that position to begin with. The circumstances of how Harris ended up as VP probably wouldn't have happened if not for the specific way that her 2020 campaign flamed out.