Very interesting question. I can only look at the local history of the place I grew up in, but in our case the accessibility of computers post '95 created the c

Very interesting question. I can only look at the local history of the place I grew up in, but in our case the accessibility of computers post '95 created the computer geek to a large extent. People wouldn't have locked themselves up in their bedrooms for their whole teenage years otherwise. Although there were many geeky/nerdy alternative hobbies, consider that as an alternative we might have just got out of the bedroom and spent more time socializing and doing other more normal and less geeky hobbies. But to answer you question: if I didn't have internet, specifically, I'd be spending more time at the local library. Besides that, electronics, cars/motorcycles/engines, carpentry, model aircraft, gardening and animal husbandry are things I could see myself dabbling in but probably not with the same intensity and single focus so not directly comparably to the time I spend tapping on a keyboard.