I've lost a phone before. I've known people who had phones stolen. I've know a few people who have lost phones in cabs (fell out of pockets.) If you are arrested for something - say, you are involved in a car accident that includes a serious injury - you may not have much of a choice about giving the phone up. My phone doesn't have just sensitive information about me - it has sensitive information about people I know as well. Exposing that information is a risk that I choose not to take. Losing my warranty is also a risk that I choose not to take. The benefit of an unlocked bootloader does not exceed the utility of the phone stock with the warranty and security. (I see a very, very small benefit at the moment. There are few, if any, custom ROMs, and I bet that they are not as good as the phone is stock.) If you want to, go ahead. I gave the reasons why I choose not to.