I get what you're saying... but what about people who don't necessarily always place their phone in the same exact pocket every time? Which is to say, everyone I know. Yes I'm a left pocket guy, but sometimes it's in my car dock, on my desk, or in my breast pocket. Oddly enough, the "slate" style that basically every phone uses is pretty versatile for all those situations.
I don't think anyone is trying to curve a screen thinking "wow, now it will conform to a certain pocket!"
It can be curved and be on a appropriate dock, or on the desk.
Now, if the set of pockets you use is not compatible, buy a flat phone.