One of the amazing things that I would miss so much about the internet if the US Government shut it down is the ability to converse with people from all around the world, no matter their race, gender or land they call home. I've made so many online friends through Wikia and other social networking sites and I have learned so much from them.
Another thing I would miss is the ability to voice my opnions on subjects, like I currently am. Radio and Television are already censored, why now must the Internet be? Is the US Government our 'nanny' and we are their little kids? As long as not every single person is doing anything seriously illegal, they shouldn't have a problem with internet users.