You are Not a moron and I don't think you made a bad decision by going clipless. You didn't learn how to walk before crawling, and -although you may not remember it - you fell Plenty of times when you first learned how to walk/run....but you're walking today!
So that being said, give yourself some time, don't be so hard on yourself and remember you're teaching your old dogs (feet) some new tricks! As a help, unclip yourself if for ANY reason whatesoever you think you're going to stop or you start to feel out of control. You can Always clip back in later when you feel better about the situation. You can rest your heel on the pedal so you don't engage the clips by mistake. I know people here may disagree with me but in the beginning, pick a foot and always unclip that one first. That way in a clutch situation you'll already be used to having that foot unclipped and working yourself off the bike on that side. As you get more comfortable with the clips, work on the other side so you can clip, unclip either side without thinking.
Also, when you start the bike, make sure the foot you have on the pedal is on the Up part of the pedal stroke. That way you've got plenty of time to get your other foot up and clipped in. If all else fails, you can at least rest the unclipped heel on the pedal until you feel in more control of the bike.
Pretty much everyone here on the board has fallen during the clipless learning curve, and some of us who know better now, will still fall on occasion. I've even fallen after coming unclipped - I was putting my foot down and the sidewalk was sloped and I didn't know it so it was a little farther "down" than I thought and down I went, unclipped on 1 side, clipped on the other, over the curb and into the bike lane, all during rush hour traffic! WHEEEEEEEEEE coz - you know - you Never fall without Someone Somewhere seeing you!
Life should NOT be a journey to the grave with the intention of arriving safely in an attractive and well preserved body, but rather to skid in sideways, champagne in one hand, strawberries in the other, body thoroughly used up, totally worn out and screaming: "Yeah Baby! What a Ride!"