So, how is it that some men find it enjoyable to get a blowjob?
I am completely scared by the idea that the girl might snap and bite my penis or some crazy shit like that.

Its a known fact that women can go insane for no reason whatsoever, so why risk the integrity of your penis over something so futile?

I am NEVER letting a woman put my penis inside her mouth. What if she has a seizure and start biting involuntarily?