I'd consider it, but it would really depend on the Android phone.
The HTC One is a great phone with a fantastic screen, but the camera sucks. I owned one for about 6 months, and I really enjoyed using it aside from the camera. I ended up dropping it and it took some pretty heavy damage, so I bought the 5s which had just been released.
The Nexus 5 seems to be pretty nice as well, but as for trading my iPhone? No, but only because it would only cost me $350-400 to buy one outright.
I've been iPhone since 2nd Gen. I work in IT and have had the displeasure of fixing or trying to fix Android devices. Clunky, unpolished, a sea of incoherent menus and each device/manufacturer has their stuff hidden in different places. The freezes, pauses, lag and aged interface is not something I like or want to deal with.
Plus, everything just works at home for me - Apple TV, MacBook, iPad, iPhone and all that. All apps released are pretty much catered for the iPhone/Apple eco-system.
I really, really dislike Google and try to avoid anything that has to do with them, so no. I will be getting a Windows phone next, though, but I'm not sure if that will replace my iPhone 5 or coexist with it.
short answer: no
long answer: I was given a Galaxy S4 in Aug/Sept to test and then keep. I had an iPhone 4 at the time. I am now on an iPhone 5S (work purchased-but i could have bought any smartphone). I stuck with an iPhone because, I have other iOS devices and Macs, I have purchased many apps over the years, family has Apple, and no need to relearn a system. I found Android to be OK. some nicer things some things i hated. if this was my first without any App purchases by each, it may not matter but having an iPhone I will stay that way. AND you get free Apps from Starbucks too.