IT has indirect pressures that often pushes people not to take time off. Unlike many professions, I'm often expected to basically 'catch up' to some degree with everything I've missed or am behind on after taking off.

Time off is more valuable to labor where the average unit of time to complete a desired amount of work is fairly small. For work that takes a lot of time to contribute too, you get no realized break, just a granted "delay" in deadlines.