This is what i think about when i need to get to sleep!
I would not want to change my life fundamentally as i would not want to alienate myself from my family and friends. So i would live in the same house, but just remodel it to a really high spec, or move a short distance to a bigger house in the same area.
I would leave my current job but I would want something else part time where I had colleagues, shared aims, work drama to keep things interesting.
Alternatively, i'd do degrees out of interest but i don't think the social side would be as good.
I'd go on two holidays a year and would have some paid childcare with us so that i could relax too.
I'd have a personal trainer and a part time housekeeper/ personal assistant who would do cleaning, laundry, food shopping and dull errands.
That's about it. I think leading a lavish lifetsyle could be quite isolating and it doesn't surprise me that people end uo unhappy