

A relationship should never be used as a means to have sex. That will only hurt people. And a relationship is so, so much more than just sex.
Honestly, to me it sounds like you don’t really want a (romantic) relationship in the first place. And that’s completely fine. Don’t try to force something on yourself that you don’t want. That will only hurt your partner and disappoint you. It’s completely fine to just want friends with benefits or one night stands (or both, as long as you’re careful). You do you.
“All opinions other than mine are only supported by dopamine highs” - wow, what a great new way of being condescendingly dismissive!
OP actually left the consequences of climate change open. No, it probably won’t be a Mad Max inferno. Probably not. But we also don’t know where the tipping point of the oceans is, because they are storing a shit ton of carbon. Hit that tipping point, and that carbon may well suddenly be released into the air, and then the shit hits the fan.
But even if that scenario doesn’t happen, and the world is still theoretically perfectly livable, you mentioned one of the main problems: mass migration. We already see what that’s doing today. We’re not far away from World War 3 anymore. So yes, the question is perfectly legitimate.
(And before anyone thinks it: I’m not blaming the migrants, of course they’re not at fault, they have every right to look for a better life. The people at fault are entirely different, but it doesn’t change the fact there is a causational relationship)