I find it funny how worked up some people get over petty things
That is a smart observation. How did you come to this conclusion ?
I had a friend whom I grew up with. But as time went on, he has become mean and cranky.
You're right. It's not ok to get worked up over small things. It's not good.
I am cynical, i feel that most people are like this.
That may be but it is good that you have learned from them what not to do. Try to set an example for others on how to be more chill.