I had a boss that would sometimes take a day off just for the fuck of it but would call it a sick day.
He would "call in" and say he had a "eye problem". If you asked about it, he would say "Eye can't see myself at work today".
Sometimes people just need a day to fuck off. Other times they are weak pussies and should be shamed. Depends on the person, frequency and situation.
We have the ability to work remote, so there's no need to "call in sick" - you just stay home and do what you can.
I guess when I think about it, most of the people I work with go to the doctor a lot. Our boss at corp is always going to an appointment. All I can say is they must be making some bank because the insurance this company has would make a jew go "Whoa, wait...it's THAT bad?"
Yeah, I don't take off often for about anything. However, I get to work remote. Even if I feel like shit I can still get enough done in a day that its not a big deal and I can do it while drinking tea and watching a movie with my work laptop (other than when I have to be on one of the completely pointless meetings).
I have had to take a day or two off from time to time for a migraine but that is so rare its counted on one hand over the span of years. That is only because I am basically useless if I get one that bad and just want to hide in a dark room until things level out.