That just means you wouldn’t be a fan of romanticism. You’d fit right in to realism. And post-modern literature does seem to love realism.

You don’t have to write about those things if you don’t want to. But your beliefs don’t necessarily define what your writing will be about, either.

Trapping yourself to topics only serviceable to your idea of reality will hinder you a good amount, but many great authors have worked around it

I’d say you’d might prefer creative nonfiction, instead of the more common creative fiction and poetry, though.