Hmmm. For me one of the BIG factors in choosing Nexus, making up for the lack of an SD and removable battery is the timely updating to current OS, mostly, as has been pointed out, for stability, security and added features. IMO, 18 months is quite lame in terms of supporting devices, little better than the abandon ware approach of some other well known manufacturers, I'd never by HTC again that's for sure!
Whatever people thing of Apple, the iPhone 3GS is 4 years old now and only now has it not got IOS 7. Yes not all Apple devices have got all the features , just as, it seems, not all Nexus devices will get the same features that the N5 has. I'd be loathe to go back to Apple as I prefer many of the options available through Android BUT this news for me definitely means that the reasons to buy Nexus over Samsung just took a significant nose-dive, especially as in these parts the Nexus devices are sold and available at full OEM (as opposed to Google subsidised) price. Here the N5 is is $627 vs the SGS4, now only $526 (albeit the S4 was $659 at launch - it's hardly an 'old' device though), the benefit of buying the N5 being what precisely???