Depends greatly on you definition of a hero now, doesn't it? To me, a hero is someone who tries to do the right thing, for the right causes. Someone who puts their life on the line to help others. Conan did what he did, for the most part, for himself. I would not promote stealing, killing, or getting drunk, to my children. Conan had a very selfish point of view, he became king for himself, not for anyone else, or even for a cause. Except for women, he never tolerated weakness, and scorned man's attempt to become civilized. Hero's helped the weak, and look to law and order, as the best course for mankind. Maybe, you could define Conan as the Anti-hero.
You idolize Conan as you would an actor, but most actors are not heroes.