the pervs of the world find woman nipples sexual but not men.
Men don't "have to," but it is weird if he does not because EVERYONE, men & women, have nipples.
No. That would be abuse and a crime.
Shaved obvs, hairy nipples look like spiders like bevans
Your nipples are probably not "sucked in", but simply inverted. Some people's nipples are just naturally this way, and is not harmful or bad in any way. Everyone's breasts and nipples vary wildly, despite what you see in the media. Inverted nipples are not normally an issue for breastfeeding or anything else. Surgery is possible to change the shape and protrusion.
No one does they want a soft looking nipple but big chest but small nipples
No, it has no effect on developing cancer.
Because it looks awesome when you do. If you like BDSM they can have some utility there.
mens nipples serve as sensory probes for to protect their chest, much like whiskers on a cat or eye lashes above an eye.
Most gay men enjoying having their nipples pinched, sucked, bite on while having sex. Overtime their nipples will become more erect and grow in size. A: What rubbish! Gay men's nipples are just the same as any man's.
No.
no