Funny, I'm of the opposite opinion. I don't really feel it's worth it (yet) due to battery drain. I'm running my nexus 5 in 3g mode to extend battery life and it makes a huge difference. Things might take a second longer to load but for most of the day I'm on Wi-Fi anyway that the extra battery life is well worth it for me.
Coming to this from a Galaxy Nexus where I literally had to carry two spare 2100mAh batteries to get through a full day has been a game changer for me.
Motorola did an amazing job optimizing power usage on this thing.
