I cannot speak for all here but I presume proper shoe care with cream and polishing will irridicate many creases to the naked eye. Good quality leather also shows less signs of wear and is easier to keep in good shape.
You are right in your observation. People here buy shoes so they can photograph them, post on the shoe porn and brag about them. Nobody really wears them, a majority of us go about barefoot all the time.
Please excuse my ignorance when it comes to shoes, but, why are all the pictures on this site creasesless? I thought the first time you wear leather shoes to creases them permanently.
A lot of people take photos before they have worn them for the first time. This isn't true for all people's shoes on here. I know for me a lot of my shoes were bought at Leffot and Steven takes beautiful photos when they arrive.