I know I am a newbie so you might want to disregard this, but from what I can tell the subconsious tries to keep us from becoming lucid in our dreams. Does anyone know why?

I personally have experience with this, and have talked to other people about it and they say they've experienced it as well. Some I've had are, becoming lucid and all the DCs around you just rush at you and attack you, or you'll talk to someone and ask? "Am I dreaming?" and they'll say no, and if you push it they'll do most anything to try to keep you nonlucid. My question is...Why?