The long and the short of it is - What is comfortable to you? I'm a stander. I have an artificial hip and sitting for long periods is hard for me, plus, I work on some big projects that require me to move around. (My belly gets in the way of the turns sometimes). Also, if you use a foot petal and your feet don't reach the floor, you need to have an alternative mount for your knee or a board on the crossbraces of your stand to put you petal. I ocassionally use a stool and sit but find it awkward. Many of us have bad backs and we all find different ways to eliviate it. You may have to try a couple of different ways before you find what is comfortable for you.