Did you fall off the first time you tried clipless pedals?

People that have had trouble; did you switch from clips/straps or from having no retention at all? I've ridden with (fairly tight) clips & double straps for a couple of years, currently waiting for my SPDs to come in the post so I can start using my Sidis. I didn't imagine people would have this much trouble making the switch, unless it was from retentionlessness?

It's not that much trouble. It's just easy to forget during the first few hours of riding. I went from clips and straps like, I would imagine, most people.