Ah yes, and at home I am not obligated to use the company desk/chair that everyone else has, so I have a more comfortable setup. Plus I get to pick the temperature, and I can use my speakers instead of wearing headphones.
I can take my own mouse/keyboard to the office, but I'm sure someday that will be forbidden in the name of information security. Sigh.
Still, my home office is a lot more comfy! Plus I can open the windows!