As Corey Hart Once Sang...

I have this thing about people who wear sunglasses indoors. Well, people who are not visually impaired, at least.
Yesterday, I saw a man--maybe in his 60s, walking around the airport in sunglasses. So, I wondered, did he just come off a cruise and forget to take off his sunglasses? Was the bright light coming in from majestic windows at SFO blinding him?
Or.. was he just trying to look cool?