alt Hacker News170k after taxes leaves you with about 130k net, maybe 140k; if you live in a big city and have a family, it's almost impossible to save 100 grand of that 140k. More realistic you would save about 50k and still come out ok, but lets be realistic noone is saving 100k from 170k gross salary
$110K a year is more realistic after taxes and then you have housing, health insurance, car insurance, food, clothes, school expenses, etc.
You’re not realistically saving $50K a year.