If not to get laid, why do bad girls use good guys? What other reason could there be?

Question

Because we all know that bad guys use good girls in order to get laid.

Answer 1

Money, attention, pride....

There's always more than one way a naive person can be taken advantage of and there's always more than one need that an arrogant pig needs to take care of. If only the world were simple enough that everyone could always have what he or she wanted without having to be spiteful or manipulative of the other guy.