Ouch, that sounds like a harsh experience, helene! Like everyone has said, you don't have to go clipless at all. But I will say that once I got used to it I loved it and there was no going back. I unclip completely without thinking now, it's just a part of the same movement as putting my foot down.
I taught myself by riding on a long, safe road where I wouldn't have to stop, and clipping and unclipping a million times along that road. Then I rode on my regular commute, unclipping both feet way before I even started to brake for a stop. I only had one or two falls, that came from having to suddenly stop, and (classic) falling over the wrong way. Yeah, feels dumb :-)
Winter riding is much less about badassery and much more about bundle-uppery. - malkin
1995 Kona Cinder Cone commuterFrankenbike/Selle Italia SLR Lady Gel Flow
2008 white Nakamura Summit Custom mtb/Terry Falcon X
2000 Schwinn Fastback Comp road bike/Specialized Jett