If I decide to use it, I'll wait until after the public has used it for a month or so and reported the bugs. Then depending on Apples response and the time it takes them to fix it, I'll decide accordingly.
Since I've already decided to pass on iPhone 5, I may just pass altogether until iPhone 6. Currently I'm using my iP4 as my secondary phone, with my primary being my new Galaxy S II.
I'm very enthused as I follow the A6, and hybrid OS project that's at the center of Apples current engineering efforts. This is of far greater interest to me than iOS/iPhone 5.
While I'm sure there will be some improvements in iPhone 5, I believe that a year from now it may be viewed as the bridge to the far more significant and advanced A6 powered iPhone 6.