I have a few friends who like to prank me when they see my truck places and flip one or both up, which looks especially ridiculous on my 1500 (personal opinion). I don't tow so I don't need to flip them up, but I really like having the outside portion of the mirror for my own reasons (and our 16 year old loves them so much that she's choosing my ram to take her road test in, being that she can see exactly where her rear tire is in relation to the curb).
We have a good laugh at them when we see them on the road too. I'm not knocking anyone for leaving them up if they want to and understand the reasons for doing so, but that doesn't mean we still can't get a laugh out of something that looks funny to us.
Somewhat related, someone on the highway behind me the other day in a 5th gen with regular mirrors, proceeded to drive the entire time they were behind me with their mirrors folded in. What's life without some balance? Or maybe going for better aerodynamics?