Easily. I could quit anything cold turkey right on the spot. I don't have an addictive personality at all. When my Xbox broke, I simply threw it out. After a couple days, I just forgot it existed. And I played video games more than I went on the web. Still haven't replaced it and its been months.
Yes I could go a month with no internet service. The only reason I have internet is because of school. (ISH not # 1). I'd have to go to the library almost every day but yeah, I suppose I could go a month without internet.
I went from November 09-June 10 without internet (one of my 2 long absences from here)...It was horrible at first but after a while I just stopped noticing that I didn't even have access to it. I'd go to my parents/friends house and wouldn't even think about using theirs