What's "complicated stuff"? Your business logic will probably be complicated regardless of what you use. A framework will just add a few more layers of complexity and introduce a (usually fragile) build process.
Idk what you're trying to build, but from this:
I “just” want to build a pretty standard, responsive, modern-looking UI. Ideally without too much boilerplate,
It doesn't sound like you need a framework. Want responsive? Learn how to use flexbox. Want a "modern" look? Learn design, or find some CSS templates to start from.
If you're trying to make a SPA (which a lot of beginners/insane people seem to think is a good default, which it definitely is not), then a framework might make it easier, or it might not. It depends on what you're building. You may be able to use HTMX with a light sprinkling of JavaScript, or may need a full-blown batteries-included framework.
So. What are you building?
You're not anonymous on social media? That's always a mistake.
Dawg, what's the point of showering if you don't wash your entire body?
There's no valid excuse for not bathing every day, except if you're camping or something. If you really are having negative skin reactions, you should go see a dermatologist. I'm not a doctor, so maybe I'm wrong.
You say that you don't stink, but you also don't bathe every day, so I'm not going to trust your judgment on matters of hygiene. You should try to get an opinion from someone who wouldn't lie to you. I have a cousin who doesn't regularly shower, and he tries to hide it by slathering himself with cologne, but that just makes him smell like body odor and cologne. I tell him he smells like shit, but he doesn't care. He readily admits that he is just too lazy to shower every day.
Idk why I care so much about this. It's your life, be gross if you want to. Just... Don't lie to yourself, I guess.