Well I can't claim to have had quite such a deep result from being online, all power to you on that score!
For me the big big big benefit has been in the field of research, primarily for the restoration that I'm currently undertaking of a unique vehicle. The internet has opened up endless opportunities to seek advice, contact other owners, find out more about my own vehicle, locate spares on the other side of the world (none here in the UK), and make valuable contact with other people undertaking similar projects.
I get contacted daily regarding this particular hobby area of mine, and find that it inspires me to get on with things when jobs appear at first to be insurmountable.
When I'm not piling content onto my own sites, the rest of my online time is usually spent on online auctions (no names!) hunting down elusive parts, information, memorabilia etc that otherwise I would never have found before.
So to answer your original question, the internet has opened up many more opportunities to pursue my non-IT related interests.