There's no way I would go back to the iPhone. While I loved the 3g for the two years I had it, I became more and more concerned with Steve Jobs antics in exercising absolute control over content, distribution and design, in addition to my frustrations with AT&T. Also, Android offers much more in the way of configuration choices, and the availability of Widgets and stacked notifications are superior to the iPhone.
I'm grateful that the iPhone exists, and believe the competition between and Android and iPhone is our best friend, as consumers. It will continue to drive cellular and phone technology forward at a breakneck pace, while it will continue to drive prices down.