As someone important would say, "I do not agree with your drawing, but I will give my life to defend your right to draw it".
I know I disagree on a lot of things you say man, but that is just INSANE. I really don't want you dead.
So as of this day I am giving up my right to draw or create any depictions of Mohammed. Yes, yes, slippery slope and whatever but if giving up on my right to do something so utterly meaningless to me means that you get to keep your life, then I will compromise to never draw such a thing. You know why I'm compromising, because I'm not some sort of asshole.
Er, I get the smug bit, but arguing that people shouldn't do it because it makes people violently angry is silly. By that definition any form of protest or any iconoclastic behavior is wrong. Bill Maher is clearly a national threat. If anything, it encourages Christian extremists or whoever to use violence to stop things they don't like.
Also, we are talking about drawings of Mohammed, not abortion or some other thing that actually matters. I want you to give me a reason why you specifically would ever need to draw a picture of Mohammed. I certainly don't have one, because I don't give a shit about Mohammed. I'm willing to bet that you don't care about it either, but I'm asking you to give me one just be courteous.