The whole spanking "when used correctly" is what will always be argued because it's too subjective. Where's the line that states spanking in one instance was appropriate and when it is not? I think based on the information you've told me and hearing you interact with your children, Goodwin - I'd be the first online stranger to say "hey that guy is a good father". I personally think my father was a great dad - he taught me the extremely useful tool of just letting shit go. I might have gotten my ass beat, but I knew he saved me the best part of the steak for dinner later that night. Then he would continually tease me and needle me until I smiled.
I think that there are way too many other issues involved with parenting that the whole spanking argument just doesn't touch such as what is the involvement of both parents, how the children typically behave, etc. I could keep going, but basically it's too tied up with societal issues. Who would've thought that spongebob and rugrats would be deemed inappropriate for children? There's so many more things for kids to have to actually decide which is right or wrong. Too many choices that kids are now forced to face at such a young age. I remember getting my first cell phone - I was 18! My cousin's kid just got one for Christmas, she's 8! But I digress...point being, I completely get why it happens and am not throwing stones - but just note that it does play it's impact