Well, funny enough, they are just as healthy & happy as the other families. They do tend to get exhausted faster/more often, but hey: that's the price they pay for their lifestyle

Both parents made it to Master, earn lots of money so they get the luxury stuff. And that makes them happy. Mum seems to get rested/relaxed doing her beauty-things in the bathroom, and hubby loves to admire his new Toolkit and reading the paper.
I think the kids are happy because they get their attention/praises/candy/playtime from me, plus they too like the new stuff in the house.
And with enough money for the good foods and doctor/medicine, the family's health is more than fine!

Guess there's lots of ways to happiness