The thing which I hate about Wurm is the need to keep coming back, seriously Rolf, you add a notification email for when a majority of your deed's farm fields are dead and Facebook will buy you out. I don't feel like Wurm yet I'm letting people down and they're not going to be happy when I come back (Last time they kicked me out of the village) but Wurm is just boring at the moment and I want to wait that off.
It's like Minecraft, every now and then there's an update and it brings lots of people back, they get bored after a while and stop playing, servers will close until the next update and it all repeats. The only difference being is that with Wurm if you wait it out you're either paying lots of money to preserve your stuff or starting over again when you come back, with Minecraft you can just stop and come back later. I +1 this idea as long as there's some sort of way to stop it from being pirated, no cracked versions etc, although a nice sandbox world would be nice.