2011 bitcoiners are mostly middle-class geeks not pro investors. Their fun-money has suddenly become something you can buy real estate with. At that level there is little point for them in buying more coins with their monthly spare cash - it's like adding a few dimes to a million.
Most of them were true believers at the beginning, yet now I'm not sure most of them still are - to the point they'd actually spend their coins.
Their stash's potential worth keeps oscillating between "decent car" and "financial empire", depending on the news of the day.
So much at stake doesn't make you sleep at night. Turns you into a zombie checking tickers and watching walls.