My first job after I got my BSME was $45k in 2012. I was there until 2017, and left at $62k. Next job started at $72k, left at $76k in 2020. Next job was back at my first company, at $82k. So, my value went up to them 20k in a couple years. I just started a new job last month, left my old place at $96k and started at $115k.

I want to stay in one place, with coworkers and work that I like. But clearly, you have to keep moving at least every few years to really make anything. I knew guys that had been at that first company for 20+ years. Working with them again at this new place, they got like 50k increases from where they were because they were basically just getting cost of living increases for two decades.

Right!

Also, if your employer only bumps you up to where you should be after you threaten to leave after years of under-compensation, they've still won, not you. Sure you're now being paid fairly but you'll never get back all that pay you should've been getting all along. And if you don't have that money, they do.