From my personal experience in my circle of friends in my expensive west coast city, there are very impactful differences between the lower end of annual household income (400K) to the upper end (1.5M). While everyone lives fairly comfortably and doesn't have much financial stress, there are things the upper end can do that the lower end can't:

- Send the kids to private schools (more and more important as public schools start to cancel gifted programs, focus on non-core subjects, tolerate misbehavior and disruption from students that wouldn't be accepted to private school, etc.)

- Live closer to work, shortening commutes from 2 hrs round trip to 45 minutes, saving more than an hour of stressful commute per day.

- Every major purchase other than a house requires no budgeting or planning

- Optional early retirement at 45 vs 60 or later

- Have a vacation house, which enables building social capital through hosting friends, and never having to compete with others to book lodging during peak season

- Freedom to leave a job that is too stressful/time-consuming