You would want to have to turn your screen on to adjust volume vs doing it by feel. Can't say I'm in favor of that.
Neither was I a fan, but once you don't have an alternative due to broken hardware you get used to it. Again, that's two less things that can break on the phone.I can't be the only person who puts my phone to silent mode with it in my pants pocket, thanks to the tactile feel of the silent button...