I don't think there are many absolutes when it comes to human psychology. Seeking to "break" a fetish seems pretty aggressive, but I wouldn't think it impossible that one day such thoughts might change or go away.

I definitely don't think there are any "have to's" when it comes to one's sexuality. You can choose to act out some or all or none of your thoughts.

I think it's quite common - nearly universal - for therapists to treat sexual issues. I think their competence varies. Experts might be harder to come by, but they're out there in reasonable numbers.