It's really not that deep - people do this because both a title and salary are effectively money you can bank and that's the only thing that matters - we don't work grueling, stressful, tedious, jobs just the sake of "a hard day's work".
> Not when I was promoted from Senior Engineer to Staff Engineer, but rather the after-hours work I did with Dimtriy to expand our offering to include IPv6.
I wish people would introspect more deeply instead of perpetuating toxic relationships with corporations; you're basically saying your most gratifying experience at work (where you are given a small slice of the net on your labor) was when you did something completely abstract and not when you got more money, more status, more whatever? Ok that's like saying my most gratifying experience at school was not when I graduated but when I had to sit in detention. Note I could've said "when I discovered XYZ mathematical principle" but I didn't because they're both equally as arbitrary in the overall scheme (learn skills and move into the workforce).