I was exactly like you a year ago. Wife and daughter got me clipless pedals for Christmas 2009 even though I didn't want them. They went to a lot of trouble to get them on eBay, and were excited to give them to me.

I just couldn't say "Thanks what a wonderful gift, but I want to stay with my toe clips." So I put them on the bike. I fell three times, once into a freeway lane. I took them off. Then I reconsidered and put them on again, and practiced unclipping literally hundreds of times.

I now use them all the time and like them. I don't think there's much performance gain, but they feel right.

They key is to replace your "pull back" automatic reaction to tilting over to a "twist out" reaction. And when you practice unclipping, do it for all different positions of the pedals.