Power Raid
We Exist To Win Premierships
The reality is that some people are born awful. And if parents have tried everything and in frustration smack their child, then so what? It's not the end of the world.
I know it may not have been the emphasis or context you meant but parents should not hit out of frustration (perhaps you meant last resort).
Dad would ask me to get a belt and no matter what belt I got, it was too thin or too thick for his liking. This in hindsight was a tactic to calm down and roll out discipline in a measured way.
but I think we all know parenting is not easy and parents need all tools available to manage their duty.
one thing I would advocate for all parents and govt is free child care. Regardless of whether you are working or not, child care should be free to provide parents the opportunity to work and time out from their kids.