Only if you're incapable to take care of yourself. Otherwise you take care of each other equally.
No. As long as you do something equivalent in return.
No, but I take care of my husband as much as he takes care of me.
Yes. And lazy.
It depends on how you go about this and how honest you are to others about your wants and needs. Express this wish from the start and don't play games.
No of course not.