I've seen many of my friends dumped by their wives when they found boyfriends they considered less boring or more prosperous.
And therein is the problem. After a divorce I was ruined financially for 15 years. I had zero say in any of it. I lived in the "hood" because I couldn't afford better, drove a POS car because I simply couldn't afford better, and if I had the temerity to purchase a newer car my CS payments went up in the equal amount to the loan amount. Almost zero contact with my kids. Zero prospects for a girlfriend since I had no disposable income for things like "dates". Ivy League educated Engineer/Project Manager and I had less than two nickels to rub together
Not that I wouldn't have gotten married again, there were no takers at that time, and a girlfriend would have been grounds to raise the CS even further.
I've seen exactly this with several of my close friends. Now, every day I come home and my clothes aren't in a pile in the driveway, I THANK GOD, and give my wife a BIG hug.
Honestly... given what she COULD have gotten? I don't know why she didn't leave me. I think, I would have left me... :-(
I have two sons... and, I have VERY mixed feeling about whether or not I want them to marry. I have taught them one thing for sure: Getting "married" doesn't really change your life that much.. you just know who your date is. Having CHILDREN.. CHANGES EVERYTHING... It's a 21 year economic contract.. that may, or may not involve being able to enjoy your children.
Anymore... ? I'm not sure the risks are worth it. I feel EXTREMELY LUCKY, after 30 years of marriage... but, it's STILL a day-to-day thing.