I think there's something positive to be said about a man who states, "Do as I say, not as I do."

Take smoking for example. I'm a non-smoker and have never smoked a cigarette in my life but am contemplating taking up the habit. I would ask opinions of both non-smokers as well as smokers. Since smokers have experience smoking and non-smokers do not - I would take the "Don't smoke" recommendations more seriously from the smokers than the non.

It's not like they are hypocrites for telling me what not to do, they just have more information to pass along a better judgment.