Nobody uses UPS because of how the drivers look. It's all about how much it costs and getting their stuff in 1 piece, let's be realistic.
There's a mailman on my route, old hippy white guy with dreads ... People on the route love him, he's a great guy too. A clean shaven face and shiny shoes don't make me feel superior to him.
(Also how many times are you going to shine shoes? I walk into the back of my package car and there's enough dust kicked up to restore them to their previous condition.)