cot bedding discussion

There is something about people nowadays that makes them really angry most of the time. People are fighting over the simplest things and it seems as if it was impossible to change any time soon. Have you noticed it as well? It can be visible in the streets, on the road, in stores, etc. It is really frustrating. I think that the reason of this situation is a fact that people are disappointed with their life nowadays. They hate their job and the act that they earn not as much as they want to and it makes them really frustrated. I think that is why they are arguing so much. Two weeks ago when I was buying a cot bedding in the store I had a great example of this attitude. I was about to take the cot bedding I wanted when someone took it in a hurry and started shouting at me that it was his bedding and that he has seen it as first. I thought he was joking but he was really angry that I wanted to take it. The fact is that it wasn´t his cot bedding and I had right to take it. Still I thought there is no need to argue with him and get involve in a situation like this. Do you know what I mean? Was it a good decision? I wonder how would you act if you were in this situation.