Not really, I like shagging so don't see a problem spending money on something I enjoy.
If I ever settle down, get married and have kids, i'll jack it in but until then I don't see an issue with it. I am fortunate enough to earn a decent wage so I don't spend money I haven't got or can't afford. I have a mate who's passion is cars and he spends a small fortune on his hobby. Mine is a lot cheaper than his!!