People with fetishes: What is it like?

Ok. I have fetishes and am asking this because I’m curious how other people with fetishes experience the world.
I have fetishes, and they never stop being interesting to me. Like sure they’re hot but I can’t really explain why. it just is.
For me, I have what is normal romantic attraction where I get crushes on boys and think about them and get nervous I guess. I also love shipping and get a similar amorous and flustered feeling when I read BL and other types of romance. I also have normal sexual attraction to like. You know normal human bodies and stuff.
Then there’s my fetishes. They feel distinctly different from my normal sexual attraction. they’re just there and are what I get off to because... what can i say they’re just so viscerally sexy to me. However, I’ve seen other people with my fetish(es) say they have difficulty in relationships that don’t involve significant others that appeal to their fetishes (For example, one of my fetishes is weight gain, I’ve heard some people with that fetish say that they’ve had ruined relationships over their partner being skinny. I can’t imagine this happening to me because to me it’s just something that’s weirdly sexy to me) So I wonder if anyone else has a complex relationship with their fetish like this. They're just so interesting to me. Or you can just say anything else about your fetish and your relationship with it they are literally so cool and one of the most bizarre and interesting things about humans in my opinion.