My father did coke a few times and never really liked it. I think it's a personal preference. He has a HIGHLY addictive personality (addicted to a lot of other things), but coke wasn't his thing. So yeah, I think it's possible. Now meth, he tried that once and loved it SO much that he decided that he better NEVER do that again cause he knew he'd be hooked. But the moral of the story is--- it's a little dangerous to toy around with just to find out.