Its definitely a personal preference
Guitar Pro & Amplitube for iphone is wicked.
A wide variety of apps to turn an iOS device into a small recording studio.
Games such as InfinityBlade ROCKS!. Epic Games said we could possibly see a version of Gears of War on iPhone in 2012 on iphone...
I'm loving TomTom navigation on iPhone. having a Darth Vader or Ozzy Osbourne voice telling you where to go hehe
facebook contact sync (although i dont use it), wifi personal hotspot.
Programs to use the iOS device as a remote control for not just your computer but as a remote control for some functions in cars, home security systems, home theater components, etc.
Using your iOS device as another monitor for your computer
I think each platform has it's advantages but there's no doubt that the variety of apps on iOS is pretty impressive.
To me personally, a negative thing about android is hardware and software fragmentation (it does exist) and the cellphone manufacturers that don't keep up with providing updates. Some don't even bother at all with updates.
When Samsung released Froyo for Galaxy S after 6 months, it actually BROKE some peoples phones, they lost ALL their data (including memory card data) and some had to get replacement phones.
Just some of my thoughts.
Personally, I have not found one single thing or feature that a miss from other phone or that I can complain about, there's an app for pretty much any feature thats missing from a standard iphone, which kinda provides some advantage and opportunity for developers.
BTW I've never found the need for Flash...
For the record, i'm not fighting and just stating my 2 cents

maybe 3 cents hehe
Cheers