You know, kind of like we repress the urge to beat the crap out of people we don't like. Just like we don't jump every attractive female that crosses our path.
Biology, nature-- that's what makes us animals. What makes us human is our ability to fight biology.
You can get to trick, but only after you explain why it might be important to repress it.
Some people like to dance, but repress the urge -- feeling that dancing is the gateway to hell. But I think they're just a bit nutty.