Yeah, but by giving more data you let software to personalize better. So by reducing your data exposure you are acting as techno-Luddite stiffing progress.

I don't think we will suddenly abandon the cloud. If anything, we will centralize even more information. My biggest philosophical debate is what will happen to people who deliberately protect their information. Surely they are meatier targets by various adversaries, but the thing that bugs me most is the fact that you will become irrelevant. Lack of data will impede even some most basic services and probably you won't be trusted because Big Cloud doesn't have your profile.