The mother of all bad days!

So I dont understand why adults dont always act like adults. I think I am an easy person to get along with, Im laid back. It's just when you have been putting up with a rude person for about a week and a half its hard to stop the tears after they've started. And why is it that women cant be like men in the aspect of throwning a few punches and being friends again? No we have to have silence and talk about it, unless the other women acts like a man and wont talk. So again... why is it that adults dont always act like adults?