When I first saw the leaked iPhone 5 parts with the larger display, I disliked it because I thought it looked stretched, but by the time it was released I thought it looked great. Now, looking back at 4S and lower, the screens look squashed.
Fast forward a year or so, and I see a mockup of a bezel-less iPhone, and it looked horrible. Now I've seen it again, it doesn't look too bad.
Basically, any change will immediately be un-welcomed by your mind, but give it time and your brain will do all the adjusting.
Come release day you will all want one.