Me too.
Although, I started out unclipping right. Then, I read an article that said you should start off with your dominant foot. So, I started clipping in/unclipping left and pushing off with my right. Now, I can unclip right, but I absolutely can't imagine leaning and putting my right foot down. Probably would kill myself.
When I was mountain biking, though, I could do this, if I thought about it. I thought having the ability to unclip with both feet was a little more important when mountain biking.
I probably could practice unclipping right, but after 11 years, it's so ingrained, i don't have to think. I can wait until the last minute and I'm fine.