I dont’ know for certain, but it’s possible they do it to keep up with property taxes. Many live in quite expensive homes with high property taxes. Carlos, from California, if in a big house may be on the hook for hundreds of thousands a year.
No sympathy, that’s called “self-inflicted” pain.
Any one of them could retreat to a simpler lifestyle, anytime they choose, but they don’t.
Some live for their desire to perform, others for fame and (mis)fortune.