Android and iOS are very different OSes. iOS I feel is more out of the box everything you need but you must use our stuff (itunes, imessage...etc). Stock Android is more here is a barebone kit and we got all these third party stuff. Pick and choose what you like.

The Nexus 5 is for people who don't want all this complications. Its a very barebone phone designed for devs. But if you get an Android with a third part skin like the HTC One, most of these issues are solved (off the top of my head I know it has #2 and #3).