Sure, normally losing your smartphone is pretty bad, but losing a smartphone that you have Facebook Home enabled on? That would be just downright horrible. Think of all the ADDITIONAL accesses the person who has your device is able to see. Not only can they now see all your contacts, but they will know who your close personal friends are, have access to your facebook inbox and messages too.
I would NEVER put my life into a smartphone, why not just give out your credit card information to the public?
With most people no longer having unlimited data this phone is going to a major headache when it comes to peoples bills. We are having to constantly remind people to logout of facebook to avoid the chance of going over because of all the updates people post now its on all the time bad idea