I am most definitely taking my time, at 40 hours now just on phase 6 alone, over 50 hours overall...
I wouldn't call single player hard, just a bit more time consuming, and requiring a bit of patience, effort, and a good attention span... (and taking breaks here and there to keep from getting 'burned out' on the game)
One hurdle some people might face are some of the minor bugs or other limitations in game. \
I know I was a bit put off by the inability to 'restock' stuff for worms and mushrooms, since it seemed counter-productive to the whole 'survival' thing.
The 'auger stuck in rover' bug also came close to wrecking my experience, but at least that was patched fairly quickly.
Who knows how many people just gave up on the game, without ever stating why the gave up or if there was a game related reason they gave up on the game.
Other factors... well, a few of the gamers I know seem to be a bit to fixated on 'action' and 'challenge' and 'competition' to care about games that require sitting still for even a moment to think things over and plan things out.
@ Hyper
Scores will be submitted 'automagicly'? Is that a typo, or are we going to get little green wizards showing up in future versions of MC:C?
![Cheesy :D](http://hyperkat.com/scratchbox/Smileys/akyhne/cheesy.gif)