DEAR ABBY: I have been married for quite a long time, and I am seriously contemplating walking away from it. We no longer have anything in common. I’m active and hike, bike, play golf and lift weights. My wife is 100% sedentary and wants no part of any of these activities that could keep us both healthy. It has taken a toll on her to the point that she has become obese and has mobility issues. Even a small amount of exertion exhausts her, which leaves me doing almost everything. I did not sign up to be someone’s caretaker because she didn’t take care of herself.