You misunderstand me. I said “Americans” not because I think that behavior is uniquely American. I said “Americans” because a) that’s the crowd this thread is talking about; and b) I don’t know enough non-Americans, nor enough about their all their various cultures to generalize beyond the sample I do know.
You’re surely right that human nature is universal. But culture gets a look-in too.
As to experiences.
I spent ~20 years as a labor union volunteer. Both in leadership roles and as part of the team that creates, negotiates, and administers compliance with the union’s contract w the company. Through several iterations of that contract with some fairly substantive changes at each turn.
IME, folks would carefully dig through all the info we put out to find something that they thought would disadvantage them and their particular circumstances or pet issues. And what terminology did they use to lodge a complaint? Almost universally it was “That’s not fair!”
e.g. If everyone was getting a 5% raise, the senior well paid folks would say “It’s not fair; we deserve the lion’s share. We’ve suffered longer. And besides, we’re senior, and everything should be on a seniority basis. That’s what’s fair.” And the junior starving folks would say “That’s not fair; the senior folks who already make 4x what we do get a $20/hour raise and we get $5? And we’re the ones on food stamps! Fair would get us out of poverty first, then give everyone a raise.”
Of course if we gave everybody a $30/hour raise the whining would be about how unfair the resulting percentage changes were.
Unsurprisingly, if we were stuck dealing with pay cuts in hard times, not raises in good times, the volume of complaints skyrocketed. But the substance remains the same: “I’m being harmed and by (my) definition that’s not fair!”
I view all this as a subset or special case of the well-known human psychological trait known as Loss aversion - Wikipedia. In short, an unexpected $5 loss feels far worse than an unexpected $5 windfall feels good. And most people do a lot of their thinking actually with their feelings.
Bottom line:
I may have experienced an unusually selfish and entitled set of Americans. But I’m pretty confident they’re little different from everyone else you might find at your local grocery or living up & down your street.