LOL @ this fanboi.
Well instead of the inexperienced hottie, give me the whore who knows what she is doing.
In all seriousness tho,
I do not think that it is fair to lump all Android devices into one category. I realize you are trying to compare OSes but how smoothly the OS runs does depend on the machine you are running on. Since you are comparing it to the iPhone, it is only fair to compare it to a high end Android device due to price tag.
I really don't understand how the iPhone does basic functions like 3G, MMS, instant messaging, video recording, GPS, voice recognition, stereo bluetooth, copy and paste, multitasking "right" (this list is features which took the iPhone a while to get, some even several years) while Android does them all wrong. If you ever use a high end Android device, you would probably know that Android does all of these just as good (if not better) than the iPhone (except copy and paste, it works but does work better on the iPhone, I will give it that).
How is the iPhone a higher end OS? Not only does it have more features (which it undeniably does), YOU CAN CUSTOMIZE ANDROID TO MAKE IT LOOK THE WAY YOU WANT IT TO LOOK. Don't like the wallpaper? Change it. Don't like the launcher? Change it. Don't like the keyboard? Change it. Want widgets on any of your homescreens? Add it. And through root, you can even change the user interface.
And with the better hardware of the higher end Android phones (faster CPUs, more ram), the Android OS runs pretty damn smoothly. And with the higher resolution, the screen does not look as pixelated.
And perhaps it is your opinion that smartphones should not have flash, but if you use your smartphone as a portable computer, it is nice to know that you have a real web browsing experience as opposed to a watered down one. Yes, the majority of sites on the internet use flash.
I choose Android over iPhone because it is far superior in pretty much every way. Why wait for features when you can have them all now? Running just as smoothly, if not, smoother (due to better hardware).