Mourn the death of my social life, as practically all my friends are gone, hardly anyone talks to me outside of facebook/the escapist. No longer would I be able to ask for advice from several people at once, or make some witty joke in response to what someone who is hundreds of miles away from me is thinking. I'd also spend more time at the library (as opposed to almost never being there), not only for project research, but also for information on diet/fitness related stuff.
I'd probably spend a lot more money on games, because I wouldn't spend any of my idle time on the internet (duh). This would lead to spending more idle time on games, leading to me getting bored of them sooner. I'd probably also start watching TV and movies again.
Finally, I'd emit a sigh of relief, as I'd no longer be bombarded with those damn farmville requests.