Fergie, I was just wondering if you ever gave any hint if dissatisfaction with your w's weight. Or her housekeeping. Did you make a big deal with a flurry of housecleaning? Resentful that "no one works as hard as you do?" Did you make her feel bad that she wasn't interested in any of this?
If these things really mattered to you, or if you thought you could change her, I am not surprised that she found someone who accepts her as she is.
You want someone thin? Marry one. You want a spotless home? Hire a maid. You want someone to tape and texture? Hire a subcontractor.
Accepting people for who they are is key to a good marriage. Plain and simple.