I'm sorry, but I see nothing wrong with "large" amounts of time spent on the internet. By large I mean enough that you could be called a bit of a nerd, but nowhere near quit-your-job amounts.
Instead of going somewhere with friends, you can sit around and relax. Same interactions you'd have on a golf course, just without the club or the bill. That's not to say you should completely replace it, but that it's not a bad alternative. You can talk to strangers and meet new people just like at the mall. Sure there are the jerks, but so-what? On the internet you have the shield of anonymity, meaning you're much more likely to act like your true-self. They might not act like that at the mall, but if they're like that deep-down do you want to be friends with them anyway? People on the internet exist without age, skin color, nationality, or religion. You're judged by your words and actions, not stereotypical bias. Is the internet really such a bad thing to be addicted to?