It's funny how you have omitted length. I wonder why. :D Perhaps because there are no truly compact Android phones, at least in the EU and US markets? You might be able to find some in the Japanese market. That's the primary reason why I prefer smaller phones. And of course, if it's not as tall, it won't be as wide as well. Not only I can reach the screen better without having to use a free hand that can move around, it also fits better in a pocket and is a lot lighter.
Have you also noticed how almost nobody these days makes a call by holding a phone to their ear? Instead, they hold it in front of them nearly horizontally close to their mouth so they can speak directly into a microphone and use a loudspeaker (how considerate of them). Ridiculous.