I've used both 'droid and iOS.
I like them both. I find iOS is slicker, 'droid more tweakable. Currently running Gingerbread on a Galaxy S. I'm quite tempted to have a go with WinMo 7.5 next now it's been out for a bit, although ICS might delay that.
It's only a phone and if I don't like it then meh I'll move on to something else after a while.
I also had an iPad but now have an Asus Transformer because I needed more of a netbook-style device without wanting to lose the tablet element. They're both brilliant, but in slightly different ways.
This sort of tribal rubbish has been going on forever (ZX Spectrum vs C64 vs Acorn anyone?) and sadly it will never end. It's usually the people spouting the venom who miss out because many of them are closed off to new experiences.