I used neovim but recently switched to helix and highly recommend it. If you haven't tried nvim yet, give helix a try before deciding. A good way to compare is do the tutorial of each and see which you like more nvim +Tutor and hx --tutor (orhelix --tutor).
If you're a current vim user the helix keybindings are only a small learning curve after the tutorial, and feel a lot smoother imo
The replacement rate isn't static. It depends on both how many people exist and how many people are having babies and how many babies they're having. If the total number of babies per year stays constant, then whether it's below or above the replacement rate depends on the size of the population. So for a hyper simplified example, if 100 babies are born per yer, that's below replacement for a population of 110, but above replacement for a population of 90, but overall the population size will trend towards 100. Obviously real life is way more complicated, but even if the birth rate is low now, it's far more likely we're just moving towards a different population size, not a population of zero
I commented a similar sentiment on another thread on proton wallet and got mostly upvotes, people just get wacky with the votes lol https://slrpnk.net/comment/10012391
Depends on the person, why they're using it, how often they use it, whether they're addicted to it or not etc. Probably more acceptable within AA than NA, but idk.
Idk depends on the swingers