I love maemo, too, and I might even buy a Cordia (hildon on top of meego) tab. But I finally wanted a mobile os which has got broad support in all areas, and with support I mean official support not only community support, even though the CSSU is a worthy addition to the N900 and the best that could ever happen to this darling. I can't deny, that the CSSU made a much, much better device from it than that, what Nokia intended it to be... But I also wanted a much bigger program choice. And I love shiny new hardware with dualcore and bigger display (who doesn't)...
Of course I've learned much from Maemo and so the first thing I did was to root my new toy. I couldn't run Android without the possibility of being root, when needed ;-)
Of course, Android is not that open as Maemo. But it has its strength, too. And for me it fits quite good.
Had HP not made such plastic toys, I would have preferred webos. But webos is dead now, too...