While $80k isn't a poor man by any means, it isn't some glorious lifestyle. All it does is buy a bigger savings account. And I imagine in some areas, $80k doesn't get you much at all.
Here, it is plenty to live off of, save, vacation, etc. But ultimately it isn't all too different than $50k when things are that cheap.
The other thing is, when you get to higher salaries, those $3-$5k increases don't mean anything immediately. Eventually you need $10-$20k changes to even make it worth while, and even then your lifestyle doesn't really change.
I just recently helped my wife get a $17k change in salary, and on top of that, she is now compensated for OT. You know what changed financially/materialistically? How much I save a month (also she gets paid once a week now instead of bi-weekly, which is nice). Whooptie do. The real benefit is they don't want to work her OT

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