I'm going to be a non-spanker, but I remember being spanked. It ended as suddenly as it began though. I don't know if my parents just decided it wasn't effective or not anymore, I never asked. I remember, since then, being in fear of my parents disapproval. Because I was spanked, I knew that it could come back as a consequence, if you know what I mean? I was scared to be spanked. I didn't misbehave because I feared being spanked. I hope that makes sense.
It was the same for me.