Who and why do people wear jockstraps?

Answer 1

Hockey players, football players, and anyone playing a contact sport (if they are male, of course). Women do not need to wear athletic supporters because the only external genitals women have are the labia, which do not need to be held tightly to prevent bouncing and discomfort.

I wear a jockstrap while running or riding a bike. Many athletes do, both in contact and non-contact sports. Also, there are guys who wear jockstraps on a daily basis for extra support. However, this may reduce their fertility due to the extra warmth the testicles get from being held closer to the body.

Answer 2

Presumably gay men find jockstraps attractive for the same reason straight men find thong bikinis on women hot. Both articles of clothing leave very little to the imagination.