God you must have so much blinding white space. And so many websites that give you long lines of text stretching all the way across to lose your place in the middle of.
(OSX, 1920x1200 monitor, Safari taking up the full screen height but only about half the width. Just my desktop beneath though it's not uncommon for me to have a couple other finder or IM windows sticking around.)
I mean whatever works for you but I'd go crazy doing that, just as you'd hate trying to use things the way I do. People are different.