I honestly don't think the type of discipline used matters as much as the fact that discipline
is used, and is seen to be consistent and fair.
Obviously I don't agree that beating children is acceptable, but I don't see a great deal of difference between using the naughty step/ corner and a swat on the backside as long as both are proceeded by a warning and ended with an apology (from the child) and forgiveness from the parent.
I did smile at the idea that your discipline has prevented your 19yo from smoking, drinking or doing drugs though Stormie. By that standard I'd have to say the vast majority of Dwellars had undisciplined childhoods
Kudos to you for doing a good job of course.