I am indeed a spanked parent, my wife spanks me. When our kids were growing up, they were also spanked by my wife. However, she is not spanked. She is the authority figure in our family. It must have worked, all three of our kids are grown, married, and on their own. I know that two of our kids are in a spanking relationship with their spouse at this time. We also have two grandchildren who I'm sure will be disciplined in the same manner when the time comes.
I am but wife is not and she does not know and wouldn't be accepting if she did.
Are you talking about using corporal punishment to modify children's behavior or using spankings as a form of sexual pleasure?