I never thought I’d use mine as much as I do but on mostly flat but undulating terrain with the occasional obstacle thrown in it gets used a lot.
I think primarily the lever has to be very accessible if it’s not ‘there’ the moment has gone and the seat’s in the wrong position game over.
Have also found it invaluable not only for getting the seat out of the way but also for making minor changes to the c-o-g. So many more places now where I can lower the seat (a bit) and still pedal but have a better position on the bike. Not only do I feel better but the bike behaves better as well
Having said that on more sociable rides the pace is kind of slower and having everything set up to tackle obstacles is not so important so the dropper has an easy ride.
Very useful when parking though 🙂