Can someone explain cucking to me?

How is this a real fetish? How broken does one have to be to want others to fuck their wife. Does it come from a place of self hate? I don't understand.

Why is cuckold a fetish? I cannot think of anything worse.

>>5
A lot of gay people are right wing.
You know, militarist aesthetics,
Sweaty men in uniform,
Bullying in a bathroom,
Dictator with an assertive mustache -
Some gays just love that shit.