I'm 30 now and started on SomethingAwful and StumbleUpon and videogame/software enthusiast forums I think when I was about 9 or 10. I wonder if I'm sort of like a person who started smoking cigarettes at that age. My relationship with compulsive browsing seems to be rooted in experiencing it differently than normal people[2]. They seem to lose interest after a period of time. I can (and do) browse for 9+ hours about 2-3x a month. Interestingly, when I travel, my relationship with browsing changes. The feeling of "magnetic attention" (present even right now) is entirely absent and I lose interest after 5 minutes, max.
[1] The 'wellness' screentime monitors have been a godsend. Assembling histograms of my usage stopped me regarding myself as entirely pathetic and got me to think that maybe I have a problem along the lines of nicotine, perhaps something not well understood by psychology yet. Still pathetic, but maybe less so.
[2]It seems that the issue I have is increasingly present in others, especially younger people who had connected devices even younger than I.