My perspective as a European is there seem to be two types. Whenever I bring up bike commutes with Americans, either the reaction is negative (with all the typical excuses), or their eyes light up and they start going on about that fixie they've had their eye on for so long. The "middle-class" of "bikes are fine tools for travel" just doesn't seem to be there - either you're dismissive or you're a "bike nut2.