Are women increasingly more independent and less happy? That certainly can be the case, however, this has less to do with women and more to do with independence. Any one person who has the burden of responsibility of doing everything on his or her own is going to feel overwhelmed, stressed and unhappy.
I have lay-ins on weekends. I make sure I am the one who tends to our babes at night, every night, since their births. I let my husband sleep. I make dinner, he makes dinner, sometimes one of us does more, the other does something different. We are always doing something of value to add to our family.