I will never support it despite having been beaten as a kid, well, by both my parents and some teachers too. For one thing it doesn't work..not always at least and not in my case!And for another its dangerous..many a times what was intended on being a "light beating" by a grownup has then turned fatal/critical. controlling your temper and knowing where to draw the line is not as easy as many assume. And yes kids who are beaten often turn beaters.
As for grown up criminals then I am for it the same way I am for the death penalty in the case of certain serious crimes.it may not always be a deterrent but at least the criminals don't get off scot free..provided of course his/her crime is proved 100%.