... The hell. XD Where I come from it's custom that good friends/relatives hug and even kiss each other on the cheek as a greeting. And they are perfectly manly and straight men. XD And it's only natural and logical that Thorin hugs Bilbo after he saved his life for gods sake, how dumb would that look if he would shake his hand for his saved life. Well, but to each their own, I guess, I just think it's a very poor argumentation, s'all.