I find I'm almost happier without the internet, when I go on holiday (in a completely computer-free environment) I just use the time for my other hobbies. If I have no access to the internet at home I will get work done quicker, and then be able to spend the extra time I have either learning things for personal interest, or (again) pursuing my other hobbies, rather than hanging around on forums or compulsively refreshing the page to check for new posts.
Thing is, if the access to the internet is there, I can't help myself. Recently I've cut down on use a lot, asking myself "Are you really doing anything, or are you waiting for something to do? Couldn't you be doing something else more enjoyable?" - it usually works.