@DarkCygnus with my back issues? Those were resolved by physio, massage, and doctor visits. I figure I'll see the benefits in long term. In the short-term, it's useful to stand when I'm feeling restless, particularly during boring zoom meetings.
If you have one in the workplace, standing desks are useful for in-person meetings at your desk. It's more efficient use of space, since cumbersome chairs are no longer needed.