Yes!
I only have one bike without. It will get one, I'm just not using it much so haven't got to it. I stop too often where there is no place to prop. It drives me crazy. I found with loaded bikes, if I make it stand more upright it falls far less. Trade off is it is less stable when not loaded. Park with wind against stand. I have good old fashion flip downs. Mainly because that's either what was on it when got it, or in my parts bin.