Its weird. I literally can't imagine life without the internet (and without my mobile phone)
Yet just over a decade ago, none of this really had any presence in my life.
I mean, what the fuck?
Yup. I mean I was an adult before the net was even invented. Nobody even had a PC when I left school. PC's hadn't been invented then. Even universities only had one or two computers, and they were horrible bloody great things you had to make cardboard punch cards for. No GUI at all. If you didn't know a programming language you were plum out of luck.
Anyway, IMO the benefits are as already mentioned (although I'm not much of a pr0n fan myself). I think the availability of information for everyone is great. I also think it helps break down barriers between people who would never normally meet IRL. Gives a real global village feel to things.

Devious, treacherous, murderous, neanderthal, sub-human of the West.