This life is filled with so many challenges and we must understand that everyone is fighting a personal battle, which sometimes they might not tell you.
So when you see people acting differently from the way you expected just know nobody is perfect, everyone is trying to figure out themselves and they will make mistake along line.
Please don't be offended by people easily, understand that they too are humans that feelings like you and they would want to do what it is line with their ambitions and goals.