Yeah. It's an odd bipolar-ish sort of thing. They're trying to overcome their upbringing..the brainwashing their parents and our society laid on them is why they speak out against it, but when they do smoke it, they can't help themselves. That's why we need to take it upon ourselves as responsible stoners to educate the masses. Explain to your friend the truth, show him some websites like erowid.org, and he will understand. Then smoke him out.