I'm not sure that this is universal. I've been diagnosed with ADHD, and ADHD drugs do help me focus. But I'm super sensitive to caffeine, too. If I have even a can of soda at night, I can't fall asleep.
It really all depends upon what you're doing. Some people don't like to leave the terminal, and editors like nano or micro aren't powerful enough for them. If all you're doing is working with configs or something like that, micro or nano is just as good as vim.
Learning vim has been fun for me, which is why it always seems weird to me when people say stuff like "why should I have to learn, etc." It's like there's no point in doing something unless it puts money into your wallet?
Learning new things makes you a better person. It's good for your brain.
It's like asking why you should make the effort to bake cookies or learn origami.
There was an episode of Pod Save America where they revealed that Biden's own advisors had determined that if he ran for reelection, Trump would win with 400 electoral votes. Biden knew about this and he ran anyway.
You can just stop reading right there.