This attitude is why so many open-source projects are shit. That said, the habit of shipping often is a good one to have. But I think it's important to follow through and deliver something of quality every time you ship.
there's nothing wrong with writing code and trying to improve, but there's something to be said for being a good editor and not releasing every keystroke you type. why release that which isn't good or useful?
Because we're not the best judge of what is good or useful. The person who chooses whether or not to use our code is the best judge.