Who's In Charge?

Okay, so again I was talking with my mom, and we were talking about another one of those stereotypical gender roles, where the woman is responsible for taking care of the man.  So the man isn't taking care of himself, and it's the woman who is expected to be taking care of the man for him.  So for instance, say this man is supposed to be eating healthier and losing weight.  The woman has made every effort to help the man accomplish these things.  But the man really just doesn't want to be bothered.  He'd rather eat his sweets.  The doctor tells the woman that the man really needs to lose weight, as if it is her responsibility to take care of this.  The woman tells the doctor he's preaching to the choir.  She tells him that she has tried many ways to help the man, but nothing is working.  And she points out that she also needs to eat healthy and lose weight, but you don't see the man helping her to do that for herself.  So why is she expected to help him do it for himself?  It's so true.  Men aren't babies, they are responsible for their own actions and their own lives.  Do women feel the need to baby men and take care of them?  Are men used to having women take care of them, so they don't bother to do it themselves?  It really makes you wonder.