Hate much, oh wait I forgot who said all of this.
I don't know about blowing. They are different , that's it.
IOS does what it does great but stilll fairly simple. Its made to be one size fits all but it doesn't. It's locked down like fort Knox. Some of the things they have are quite nice. Visual voicemail is quite nice and wish android had it. The clicking at top of page bringing you to top is also quite nice and i miss that too. Better missed call, voice mail and txt message notification on screen is also missed.
Android allows for much more customization. It's much less secretive and locked down. Want to unlock your phone so you can use sims overseas no problem, want to root no problem. Sure most the carriers put tons of crap that run and slow the performance out of the box. I picked up an unlocked phone and it runs much quicker then my iPhone 4 ever could. I can actually browse just about any site I want and not worry about flash. (it's amazing how nice that really is after having iPhones for last 2 years.)