Pooping in Public

The other day as I was in the restroom, which our office has to share with the entire 5th floor, I starting thinking, "What is the big deal about pooping?" Everyone does it, it's a natural part of life, it's not like you do it out in the open for everyone to see, you are in a restroom. So why does everyone make a big deal about pooping in a public restroom? I was thinking this because I was in there with someone who clearly wanted to poop but was waiting for me to leave. I'm guilty of it too. Sometimes I'm in the restroom and someone else is in the stall and we end up having what I call a "poop off." Both of us are waiting for the other person to leave before we start pooping. I don't get it. It's like this stigma that society doesn't want other people to know when we poop. It's weird. It's even worse if you walk into the restroom and the person in the bathroom sees you. It's like, if they don't know who is in the stall, pooping is ok but if they see you, we just hope to force out some pee so they don't know we really need to poop. It's all just funny to me.