I think a lot of people are addicted to the internet. The internet provides a lot of benefit and is very useful but there is also a lot of entertainment available through it. And most of that entertainment is free or extremely low cost. I think that is why a lot of people feel relieved to get away from it from time to time. With other addictions (smoking, drinking, drugs) there is a very clear cost. Your health, and your money. As the addictive parts of the internet are free you don't really notice the negative effects until you stop. It all comes down to controlling your use and as I've said, when everything addictive is free it's hard to stop yourself.