And I'm the same exact way; in fact I snapped at my little brother today when I was helping him write a speech because he started talking when I was fixing some of the sentence structure. Simply saying thank you put me on edge when I was dealing with fourth grade grammar.
But that being said, I think there is a lot of value in being forced to write with a room full of people. It helps you cut out that "I need to be inspired" aspect of getting shit done. I like being trained to just write without having your novel writing utopia around you. It helps you create structure in a field that has a negligible amount of structure. You write when you can, it's your job.