Money, of course. Both greed and comfort.

And existing obligations. Most people I know, myself including, stretch our current situation as the paycheque grows.

Some of it is intentional. A lot of it is slow creep (“ah, I can afford a, b, c now..that Maserati/Porche Cayenne GTS/Urus-lol I’ve always wanted!”). While you’re doing this, your spouse and kids are doing it 2x - “oh dad got that fancy new car! I guess I can ask him for the special edition Jordans now..”). Out of guilt, you let your family join in on the buying frenzy.

Now you’ve landed yourself with new loans and obligations (more expensive car = higher maintenance cost, same with house, etc - higher expectation all around, keeping up with Joneses, charity events, …).

Getting out of all that is much more difficult than overcoming your own greed and discomfort - many are legal obligations and you basically need a multi-year plan to go back unscathed (assuming you and your family are pragmatic enough to readjust your comfort level). For some it can be leaving useful social obligations - you lose your social circle if you downgrade (may have to move further away, no more club or association memberships).

The only real remedy is to not let your expenditure go up when you get a raise. But it’s less about you and in equal measure about how your partner operates, kids, family, their expectations etc. All in all, odds are not in an average Meta employees favour no matter what they might personally think/feel.