[freehunter]

Desks that don't support standing. Workplaces which frown upon making your own standing desk. Commutes where there's no "not sitting" alternative. Professional lunches/dinners. Meetings. There are plenty of reasons people need to sit. A half-hour commute each way, one 1-hour meeting, and lunch with coworkers will put you at your 3-hour sitting time per day without anything else.