I hate shaving. It's much easier to just do a little stubble, but my wife and daughter like it when I'm clean-shaven. If you see me with a clean face, then you know I'm in the kissing mode!
Nothing can stop the man with the right mental attitude from achieving his goal; nothing on earth can help the man with the wrong mental attitude.
It's certainly more interesting for me as an actor, but I think it's also more interesting for the audience to see three-dimensional characters, rather than just a bad guy or a good guy.