All I know is I ordered my iPhone 6 yesterday and the ETA is 10/31, Life Proof better release that damn case before the phone gets here! lol in all seriousness though I have the 5c right now with a Life Proof case on it and I love the case! On the 5c it was not because I'm not careful but rather because I like to take my phone to some rather smartphone unfriendly environments, sailing, rowing, running, activities in the middle of a downpour, airsoft/paintball, and other minor situations like using my phone to play music in the shower, I don't need to bring it in but if it slips and falls or my hands are extra wet its no big deal. Also its less stressful to have Life Proof case on a phone when your at the beach or by the pool. Honestly though its gonna be a bit, I'll likely settle for a resonably protective bumper, or even full case for the time being :/
As for the iPhone 6, it seams a little more fragile than my iPhone 5c and since I intend to use it just like my iPhone 5c a case is really important to me. Sure I like my iPhones naked (who doesn't!) but such is life. Occasionally I'll remove the case of my iPhone if I am going to an event where I end up wearing a suit, iPhone looks very classy/business-esk naked, especially the silver/gray, that combined with it looking improper to have your pockets buldgy makes it perfect
EDIT: I really don't like Otterbox, you would think they would offer the same level of waterproof protection as Life Proof, idk the brand name is associated with water and water proof storage box's...I think its strange they bought Life Proof, just glad (at least for now) Life Proof is still the same reliable option as its been for a while.