My Work Sux

Well... I''m in a work, where you have nothing more to learn and go further with the carrier and you have absolutely nothing more to offer. I find it boring, but just waiting for my second round offer for my Nursing application. I don't wanna take my job for granted but, at the same time I have to look into the future and decide something; as if I'm going to work here continuesly or just find another job where you have lot to offer and learn.
Usually I finish what ever I have to do for the day and go thru my email and just type some heading that comes into my head in Google search and just read about it.
Today I was thinking about my train trip from Thomastown to Melbourne Central train station. There were two girls and a guy in the train just sitting same row on the opposite side of me. I didn't really notice much about what they were talking, few minutes later this man got into the train and he just sat opposite of those people, two minutes later that man started to swear and scream on top of his head, all these because that girl's knee touched his leg accidently, she apologised, but he kept on yelling. Then those two girls and the guy moved to another seat.
Why people are like this? I mean, that man was so rude, it was just an accident; I don't think he will be able to handle any sort of situation in his life. It is sad and interesting at the same time when you think about it, world is full of strangers with different personalities.