SuperRhino

When you're in the mood and masturbating, is it completely normal to really want to destroy (for a lack of a better word) someone then feel an immediate regret after the deed is done?
Example: While it's happening I really want to have sex with chick A. After it's over I think to myself "no I wouldnt really do it; why did I think that would've been a good idea?"

So it's more of a psychological question than a physical one.