Oh sure, there are several articles that point out how small the Android paid market is compared to the iPhone. And from anecdotal experience, that seems to bear out. Almost everyone I know with an iPhone has bought an app at some point but of the few friends that I know have Androids, none of them have ever paid for an app.
That said, it seems like a very powerful platform and if I had an Android, I’d probably try developing for it except for the fact that between a full-time job and a certain other thing occupying all my free time: