Because I don't really care about their (patients) personal lives. Honestly if someone starts to yap about their wife, husband, dogs, and whatever, I start to space off into the Mars. I don't want to be rude, but I'm just not very social. Well, not sociable enough to be a nurse. My ideal definition of nurse is someone who can relate you into all the medical stuffs, who can explain what's going on, and a doctor tends to speak in a very technical manner.
But of course if I'm put in a spot I'll just say I enjoy the challenge of solving problems, not receiving orders.
I totally respect nurses. They get the whole family through a crisis, but I'm not a nurse material. Sorry.