Just because it doesn't "play" games does not mean it isn't useful and interesting for some to try out. Also, if people get to try the emulators' in their early stage they can be of great use in helping pin point bugs and major problems. Then again that's mostly for beta testers to do. None the less, it's the small people like us who can post emulator problems on these and other forums where some emulator programmers may dwell. In effect, they can address your problem if it seems to be important or worthwhile at the time and thus, improve the emulator.
Hey... if they didn't release "non-working" emulators to the public we would end up with a programmer saying at the end... "well.... it worked on my machine"