Why are people rude?

Today in Relief Society, the lesson topic was "Love Thy Neighbor as Thyself." Our teacher started out the lesson by having us close our eyes and picture our spouse or someone who we loved the most right at that moment. I, of course, pictured Doug and how completely wonderful he is. :)

Then she had us think of a person who we find it difficult to love; someone who bugs us or who is hard to get along with, etc. I tried to think of who that might be, but the only person that came to mind was this mean guy at Costa Vida who was really rude to me for absolutely no reason.

Part of Doug's family was in town and so his mom took us to eat at Costa Vida. We were standing in a line in front of the menu, trying to decide what to eat. Three guys walked in behind us. They were probably all in their early 30s. We were going to be a while deciding on our orders, so I politely told them, "If you know what you want, you can go ahead of us." One of the guys responded, "Well we actually can't because you're blocking the menu." It was such an unexpected and unwarranted response that it came off as extremely rude. I don't know why it bothered me so much, because I'm generally a very laid-back, forgiving person. But for the rest of the night, I just was "rubbed the wrong way." Why are people rude? What is the point of that? What do they stand to gain from being rude, that they wouldn't gain quicker by being kind?

Thanks to today's lesson, I'm completely over that guy. After church, I told Doug that I had brought up the mean guy in Relief Society and all Doug could say was "Really? You need to get over that!" haha.

Anywho, this is kind of a random blog post, but I'm sure most people have had similar, if not worse experiences, so I don't mind sharing mine. :)