It's not you. People are rude and it's getting worse all the time. I guess it's not just Americans either. The large groups of people/teens are super rude. Another poster wrote (and I agree) all you can really do at this point is positively reinforce good behavior when you see it. Praise the few individuals/children who act in a kind, well mannered way. I raised two kind sons, even when they were like 10 y/o they would get up out of their seat on the bus if an elderly person got on, or a mother with an infant. I didn't have to tell them. People have become lazy and have opted to be their kids best friends instead of doing the hard work of being a parent. Kids need rules. Kids actually are happier with rules and parents that give guidelines. The problem is, nowadays most parents were raised by parents who didn't expect good behavior. So the problem is becoming generational. I fear it will only get worse as time goes on.