Bitter??? Yes, most assuredly. Have good reasons and excuses to be.
Have been asked to train younger engineers - and was replaced by the trainee after a summary dismissal - called a RIF (reduction in force). He didn't create anywhere near the amount of parts I did but he's long gone and my parts are still being sold - 20+ years later. Nice to know the company has made millions off the parts and I got 9 weeks severance.....
Saw "kids" given excuses time after time at another job yet I was called in to fix the mess and make it work. The thanks I got was reassigned to another FUBAR'd mess instead of the glamor job I turned the former FUBAR one into. THey tried to lay the "you should be honored" crap on me when the "kid" got the cream and I got someone else's folly to fix. NO money, no position, just more exploitation. Oh, BTW, the "kids" who I replaced got promotions into managment.
There's any number more but you get the picture.
I always wondered why my dad (a creative hard working construction worker) was so bitter about his job and his situations (overheard while "guy talk" took place at family doings). At this time, I fully understand why - and know how to overcome/deal with them.
Solution: prepare yourself to WALK, no RUN to the next opportunity.
There is a difference between wisdom and knowlege. Schools provide knowledge, the aging process provides wisdom.
It is not that often that one is fortunate enough to be take advantage of the one that is offered and the good sense to recognize when the other is there for the grabs.
Yes, people get bitter. But even a dog quits coming when you call it and beat it when it arrives. In my case, I turned it (the bitterness and disillusionment and KNOWLEDGE) into a business opportunity as well as a chance to offer something special/different in a rather mature and set in its ways industry.
Now I just have to deal with the people who begrude the fact that my job is "so easy". It should be, I spent half a lifetime setting myself up to take advantage of it and the other half learning as many tricks as I could so as to make it that way when/if it happened.
Luck is when opportunity and preparation meet...... I don't make a lot now but a lot of the kids I do work for at the OEM's have clear envy in their eyes when they come to the shop in mid afternoon and we're playing fetch with "shop dog".
Does as good a job as antidepressants and much less problems with the mind numbing side effects. Got to go - the dog wants/has to go out..