I had the good fortune of suddenly having a hefty amount of money 10 years ago. It was a six figure number, and after paying off my Wife's debts (I didn't have any) and buying new cars, I still had 90% of that money left. Life was very good, I could live comfortably off the earning from my job and didn't spend any of the remaining money. For 5 years, I couldn't complain, and slept very well at night.
My Wife however didn't cooperate. I made the mistake of giving her too much power and trust. Among other projects, she opened a restaurant, and wasn't exactly truthful with the money being spent. To make a very long story short, all the money is gone, we don't have **** to show for it other than 2 10 year old cars. She now has tens of thousands in credit card debt, I have a large mortgage because she used our equity to borrow money for the now closed restaurant, and we fight constantly about money.
So, from my experience, life with money was a MUCH more pleasant, with far fewer arguments, and the kids were happier because they were spoiled.
And yes, I'm a little bitter.
