I prefer simple disk checks. I have a reliable internet but I don't really give a.... (Well I won't say that) About any sort of online activation.... Its annoying, inconveniant. And can and WILL keep some people from playing the game. I have several friends who have no internet access what-so-ever. But I will be quiet to avoid a rant.
What's inconvenient about it?
If you don't have internet access you may as well not be playing PC games, what with all the patches they get. Get with the times, or stay in the past and play your older games; that's how gaming has always been.
Mordy, under copyright law it is legal to make a backup copy of media you own, on the condition the copy is destroyed if you cease to own the original. I typically make ISOs of any games I own that do disc checks so that I can keep the discs in mint condition.
Umm, Steam does the same thing, except your backup is online.