I agree with you Jake, it really does come down (for most people) if they are happy in their new relationship/situation.
I am just one who puts their child first, period. It's just who I am. I know it's not most but if more parents did this, we would have much more adjusted adults in the future. Just my two cents (ok maybe 5 but I had a lot to say)
Isn't your bird out of the nest?
A friend of mine tried getting divorced and his grown children (married with kids) couldn't deal with it in the least.