Yes this is my exact point. As a male with tons of testosterone, if I'm out with a girl I'm interested in and some douche is checking her out, there is an impulse to beat the shit out of that guy. But as a human with self control, I override the impulse and let that stupid idea go. Like you said, the most basic thing in life, feeding yourself and taking care of your body, isn't that hard to do and those that can't do it make me greatly question anything they do in life.