A woman with a handsome multi-millionaire award winning soccer player that treated her perfectly in every way ( her words ) divorced him because she was bored.
Thinking the grass is greener on the other side is another reason or if you prefer the proper term 'hypergamy' is another big reason and plain and simple a general desire to sleep around is a very common reason as they have lost sexual interest in their husband. Plenty of biology behind why this happens after a few years.
So, @Parsifal lots of women are destroying their families for not so acceptable reasons given the vows they made on the wedding day.
And some excellent comedy ( the best comedy has a lot of truth to it ) sums up some of this very well >
