Aren't Droid marketplace apps free? Besides, iPhones are stupid. All they are is an iPod touch with a calling/texting feature which you can actually get on iTunes for free so...
I have an iPhone and love it. My dad had an iPhone, than got an android based phone, and no he sys he can't wait for the iPhone 5 cause he has so many problems with the android. I comes down to preference though really. I'm sure a lot of people prefer droid to iPhone...all I can say is personally the iPhone fucking rocks.