I wanted to be a fireman, then I wanted to be an archaeologist. (Or maybe a paleontologist--dinosaurs were cool. But no, ruins and bones and mysterious people were cooler.) Then a nuclear physicist. Then a particle physicist--that was in high school; Feynman sounded cool. I didn't look back. (Funding ran low, and I'm in IT now.)
My dating career was similarly circumscribed.
I think of fields of study as more like places you go.
In some places you are just a tourist--you go look because it's beautiful. Others are familiar vacation spots--you have some emotional investment too, and you put in the work of camping. Others are places you live for a while and actually help out with something--they require a lot more investment of time and understanding what to do.
I'm a tourist in a lot of different fields--I try to learn enough to get the beauty of them. (I get pushback from some members of the family when I assert that mathematics is an art form too.) Others I know well enough to be able to ask useful questions--generally questions that were posed and solved a century ago--but that’s a camper for you, discovering a "new" trail. In a couple of fields I spent the time to actually find new things--but it does take time. (Oh look, a squirrel!)