so... i read it as a workbench for you know woodworking or things to do in your hobby room, and thought who sits at those.
i dont work from home or in an office so you cant really call the place where i use the pc a workbench. i walk/run around all day so when i get home to do something on the pc or play a game i want to sit down and relax not stand and destroy my sore feet.
although i have had a treadmill once that i combined when i played console games during the weekend.
I have a standing desk at work and love it. I stand from when I get in until lunch - I do have to sit down for a proper lunch - and then stand for the afternoon.
We used to have treadmill desks but I guess someone got hurt on one because now they're no longer allowed.
I made a conversion for my desk last weekend, had my first full week using it.
I have to admit I like it.
if anyone is interested you can make one cheaply and see if you like it