To me it's not disappointment as much as frustration. I've played with a lot of altcoins, several of them with much added functionality, and the amount of bugs has been a) minimal and b) nondisruptive.
And in general, over the years I've messed around with alpha and beta quality software, development/HEAD, and simply have not run into half the trouble I've had with BitShares.
For the time being I'm still on the boat but serious doubts are beginning to rise. I would definitely NOT recommend BitShares to anyone right now; I have the motivation and patience to work things out, most people don't, won't, and at any rate, it'd be silly to expect that of them.
The QT wallet seems to be alpha quality at best right now. Maybe I got the wrong impression, but I thought it was somewhat ready for general consumption. It isn't.