I have a Tesla that, for financial reasons, I can't get out of for another couple few months and while it is one of my favorite cars I've ever driven (and I've driven many), I can no longer enjoy driving it because Musk is a piece of shit that deserves cancer. Looking at Lucid and Rivian now.
I also used to believe America was a great country, but in my late 20s started to realize it's bullshit (I'm in my 40s now). It was kind of a sad realization and it has only gotten worse since then.
I also used to believe more in people and their ability for empathy and, if presented the facts, they'd ultimately make good decisions. I now believe people are generally selfish and narcissistic, and that most don't give a shit about facts and live entirely on off-the-cuff emotion. It doesn't stop me from caring and trying to help (some) of them, but it's definitely made me more wary and paranoid.