for alot of men and women, it is. but whenever somebody points out that maybe being a sexual deviant is not the best way to live life, that person is accused just being mad that he doesn't have the looks, status, wealth, etc to live that lifestyle. and, even if it is demonstrably proven that said person does have the attributes and the ability to live that lifestyle, most people will just assume that something is off in his head for choosing to not be a sexual deviant
as to side pieces, to be honest if a man has the attributes - looks, athleticism, status, wealth, etc. - to have many girls interested in him, that's great. polygamy is a thing all around the world. don't even have to marry these girls, just have kids with them. because the entire purpose of getting with that many girls, should be to have children with them. what's the point of just having a bunch of pointless sex, if it isn't to have children?
sex without the purpose of having children, is a drug addiction.