Why are men so difficult when it comes to love in a relationship, need to know?

I met a guy on Yahoo Personals, turned out to be ok. But he was very high maintenance and always wanted more and never gave. Is this normal in a man. I find it odd that the more I cared for him the more he wanted from me, now my fridge is empty and so are my pockets,, help, really want to know why it is so difficult to meet some one that can love me for me and not the things I can do...