Are people really moving their computers around like office chairs? I must be missing something, my desktops haven't moved since I bought them.
Yes, in a professional enviroment, they are moved a lot since the majority of the ports are in the back, especially in a shared environment.
And when I use the word "professional" I am not referring to people who call themselves "pros" and spend 90% of their time surfing the web and using common productivity apps.
If the wheels weren't necessary or in demand, no one would be offering them for sale.