I see your point. I had the same fears once I started riding too. Here's a suggestion... set the tension setting on the pedal real loose, so basically it doesn't take much twist to get your foot out. Try this for a bit and see how it goes. Talking yourself into the fact that you CAN get loose and you WONT fall is the psychological way of getting past your fears. I have downhill clipless pedals that have large platforms like regular pedals instead of the puny small ones. Those gave me a lot of confidence too. Try it. Do what works best for you. If you are uncomfortable with the clips, how fun is the ride going to be? And isn't that what matters anyway?