http://i.imgur.com/GxzeV.jpg
I think this image sums of people's grievances quite nicely.
Why pay for a game where they intentionally limit when you can play it? Pirating it is not only cheaper, obviously, but you get a better product as well.
If I drop 60$ on your product, I shouldn't have to jump through hoops to use it - I should be able to use it whenever I want to, not when you want me to.