With the recent push (shove) of Google+ down everyone's throat, I find myself avoiding the use of Google services that collect & store too much personal data about me. I've tried Google Now but couldn't convince myself to stick to it. The negatives outweigh the benefits. Plus I love a tighter control on how my phone battery is drained. Google Now doesn't let me do that. I see an additional 20-30% drop per day with Stock Android & Google Now enabled. So long.
Privacy concerns. They accumulate a lot of personal data for customizing your experience & providing more contextual information. This problem has been compounded by Google using subtle trickery to get more out of you.
P.S. Android phones do not have a problem with battery life
