Room 101 Part II

I hate signs in the back of cars espeically ones like this! It may be irrational but they really wind me up and I don't see the point of them. Even the 'Baby on Board' ones. I am not a parent so maybe I don't understand these things, and am speaking out of turn, but why do I need to know that you have got a baby on board? What do you want, a bluddy medal for managing to reproduce? Oh, ok, you have a baby on board, so that means I won't crash my car into yours in case I hurt your baby?!! To me it doesn't make sense!