Working in groups.

I've always wondered why we have to work in groups in school. Why is it so important that we get involved w each other and be forced to work together especially when I don't and most of the time don't even want to know the rest of the people in the classroom. Reality is that is really hard to work with other people, and yeah I know that we do that everyday. I do that everyday! I work with random people but at the same time I don't have to depend on them for anything. That is my maim problem with groups, dependency on one another. I mean why do I need to depend on another person or in this case why do I have to depend on other people to do my class work when I can do it myself? To me is never a good experience to work in groups it really sucks! Because someone is going to do more work than what they are supposed to and I don't find that fair.