Just to offer some counter points... I bought MonoTouch and absolutely love it. Mono is rough around the edges but they do manage to get it right where it counts. At runtime MonoTouch is fast, stable and runs great. MT is so much nicer to develop for compared to Cocoa Touch it's not even funny (I've released two iOS apps written in ObjC and consider myself pretty decent with the platform). Novell knows this and knows this is really the only edge they have, which is why they've put so much into MT and now MonoMac.

Yes Mono's future is shaky, but as a .NET developer I can adopt to Mono pretty much overnight. So if it goes belly up I haven't lost all that much.

Would I base a business on anything Mono? No, I wouldn't, you are right there. But despite all the FUD, there is value in Mono as long as you can maintain a realistic outlook on it.