Dirty Old Men

Why is it that some men think they can walk upto you in a supermarket or at a bus stop, ask you 3 questions (whats your name?, where are you from?, where do you live?) and expected to recieve your phone number. Then they get defensive when you refuse there questions and to give up your number, they defend themselves saying 'I just thought we could be friends, you know hang out sometimes.' Yeah right... I know what you want, and your not getting it from me.