Should the friends have common interests only?

Tweet

Most of us feel that the people of common interest will become friends very fast. If the intersts of the two people are not matching, then they may not be able to become good friends. That is the common theory. However, we also find some exceptions. One I have seen is like this: During my college days I used to represent my college in different tornaments of Table Tenis and Badmington. I had a good friend and competitor whom I could never defeat in Table Tenis. He was very good player. He had a friend who would be present only during the match of this guy. Otherwise his friend would be sitting outside the hall and doing something else. I was surprised how these two people could become friends as one was a keen sportsman and the other one had no interest in sports...! My sister was a good artist. So I accompanied with her in some cultural programmes. There I found this sportsman and his friend again together. Here the picture was different. The sportsman would be outside the hall when his friend was not performing. Otherwise they were found together. I asked the sportsman about this contrast of interests and friendship. He said that they were room mates. And just like family members support each other they were supporting each other. Have you come across such cases...Please contribute you experience.