Lately I’ve been mostly avoiding caffeine, but probably for a different reason than OP.
My goal is to get to the point where if I need to stay alert, caffeine would have a significant effect. So far I believe I’m not there yet, if I ever will be. (Might be genetic)

I don’t like the taste or smell of alcohol, so that’s just never been a thing for me.

Never smoked or vaped anything. Can’t understand why people start smoking nicotine, when it seems so obviously terrible.