My first family is on its 8th generation.
Has 43/48 collectables, and $23,849.00 in the bank. I do spend a lot of money changing clothing.
I have 89 trophies.
The rest of my games were started quite a bit after the first.
All are doing well.
The secret to a long life seems to rest on the amount of food in the house and Happiness levels (which in turn relies on activities)