Because this (http://www.msnbc.msn.com/id/27867839/) might happen. Your hubbie might leave the phone, complete with explicit pics, at the local Mickey D's. Some overly curious employees there might decide to see what's on the phone, and finding the pics get them up on the Internets.
Tina and Phillip Sherman discovered this the hard way. I'm thinking genius there decided to use one of those pics as his wallpaper. So now they're doing some CYA by suing McDonalds.