I do.
For one thing, building tablet software is hard. I mean, extremely hard work from a UI perspective. It makes stuff for the phone look like a cakewalk (I'll share a blog post sometime). So if Android Market continues sucking ass in terms of rewarding developers versus what they can make on the App Store, you'll get a bunch of turd apps and not much magic because what's the point of all that sweat?
Secondly, Android is inflated by the fact that if you want a cell phone you will be given an Android device for free if you start new service.
There is no magic free Android tablet tree – the economics are completely different. There's the argument that you might see a halo effect from all those phones... but people don't tend to value what's free and the carriers are doing whatever they can to cram these phones with junk anyway.
So, like I said, I do.