WHY?????

Can anybody please smack me over the head with a brick to help me to come to my senses!!!! Why oh why do we still try and then try some more and then some more to please them, make them treat us properly, make them affectionate, make them say they love us when we KNOW that it is never, ever gonna happen. What makes us hope, I just don't understand my own actions at the moment - HELP !!!!