Making life better for the pirates.
Every game ever written will be pirated. Don't bother pretending that it won't because it will. There are hundreds of eager little bedroom jockeys just itching to break the thing that took your small team of developers months to create. Getting some credit and a minute of fame from 'the scene' is what makes them tick. Once cracked the game will be downloaded by the pirates with almost zero chance of being caught and costing them a few pence for the bandwidth. They will play the game wherever and whenever they want without your DRM giving them a moment of bother.
On the other hand, honest Joe (who lives just down the road to me) will shell out his hard earned cash for your game and be frustrated when his cable connection is down, his ADSL connection is slow, he is abroad and doesn't want to pay roaming charges, can't get access to wireless connection, the network driver on his computer has stopped working, the cat has knocked his network cable out, etc., etc.
So, the pirates get it easy and the legits get it hard. Nice one.