Another case of the customer knows best. Recently you may have heard about how a intrusive form of copy protection was going to be included with Mass Effect and Spore that constantly connected to the internet (at the rate of every 10 days) just to check your serial was valid (with no check = no play).
There was a huge uproar as a consequence, with many potential buyers saying that they would just simply not buy their title (or even pirate it on purpose) just to get rid of this major intrusion.
If only publishers will learn that you must REWARD your customer for purchasing your game, not punish them. Make it easier to be a customer than to be a pirate.
Thankfully the voices were heard and the decision was reversed, with the new system being limited to one online check upon install and consequent checks when you download updates (which is reasonable enough). Still the limited installs is extremely annoying as you should have the right to install the game as often as you want since you payed for it.