What is the Main Issue with Fetishes?

What is the main issue with fetishes? Many people are afraid to voice what they really like in sex even to their regular partners. This happens out of fear of being misunderstood and rejected. Fetishes are often confused with terms like kink or a specific attraction to something that enhances desire but is not necessary for arousal and orgasm. For example. Kink: You practice spanking (in BDSM practice, corporal punishment in the form of a series of slaps on the buttocks with the palm or a wide flat object mimicking it), and you just like it. Fetish: Spanking is a necessary condition for your arousal and achieving orgasm.