Protecting ones phone is always a challenge.
Drops are not something anyone does on purpose, yet to say we don't plan to drop it is awfully wishful. After all that's why they're called accidents, as one simply cannot always be in control of the unforeseen circumstance.
I dedicate my left front pocket to my phone only. This, because I strongly dislike screen protectors. When in use I do my best to be careful, yet I am still at risk of dropping it. A risk I'm willing to take.
Recently I've found a stellar case in the form of the Spigen SGP Slim Armor. It fits my Galaxy S4 perfectly. Luckily they are building one for the Galaxy 3 I have on pre-order. So I will proceed as usual with a case only.