I switched to clipless when the Look pedals came out, oh, about 82ish or so. All of my bicycles are fitted currently either with SPD (ATB) or SPD (Road). I had a few tip overs early on and once in a while when something weird happen I might still fall over. It happens with a new set of pedals if I have not got them set right and they are still stiff. As far as I am concerned, there is clipless and there is nothing else.
At first I kept clip pedals on my tri-bike so I could use my running shoes but quickly decided the time lost switching shoes was not meaningful for an age-grouper.