Working alone, or working in a group?

I think that working alone and working in a group are equally challenging. Finding which one works better for you really depends on the type of personality you have. I tend to be more of an introvert so working alone doesn't bother me at all. I like to be in control of everything, but I'm not a control freak (I swear). When working alone you don't have to worry about pleasing anyone else, and when you don't have to please anyone else you don't have to worry about letting anyone else down but yourself. You also don't have to worry about other group members not pulling their weight.
Now this is not to say that working in a group doesn't have its advantages. It surely does. Group work, especially when working in a big project, makes the task a lot easier. You can divide up the work among the members so you're not trying to do everything yourself. You also have a bigger variety of ideas and knowledge to draw from. Learning how to work in a group is an important life lesson. You won't be successful in anything in life if you don't know how to compromise.