Why are women so demanding?

They want guys with resources, muscles, who take them on fancy dates, give them gifts, have a high paid job, to marry them and have 10 kids with them.
And to be available at all times to endure their never ending nagging and bitching.

Why?
Is it even worth it? To please women and have a girlfriend and wife? it sounds like a second job to me, that is underpaid and not a relationship -.-

Do people realize, that it's almost impossible to fulfill demands like these? Wake the hell up people!
And don't give me that argument, that men want women with big boobs, big booty and being under a certain weight because many of us don't really care that much as long as the personality is good.
Why are women so demanding?
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