People's motives for doing things can only be explained by the person that did it. Maybe if you offered some examples you could get a better answer.
ipoopglitter has given several of these kinds of answers ranging from stupid to potentially harmful.
http://www.ehelp.com/questions/10445432/how-do-you-tell-her-that-you-wana-have-sex
They must think it's funny. It's not. I agree it can be harmful and I wish they could be removed.
i do feel the same way. atleast the are people who can see this.
Rob answered in another question that those posts have been removed, so there are checks and balances in place. Jadon, I hope this is reassuring to you. :-)
Some people just don't have anything better to do, sad but true :-)
you are right and they have to find better ways of spending their times