Spanking =/= Abuse
It's discipline, and without it kids grow up to think that the worst punishment they will get is their parent telling them to "go to your room". They'd just shrug and continue doing whatever they were doing because they know the parent isn't gonna do anything about it.
I've seen this video that some kids recorded. It was 2 brothers (like 14 and 12) smoking in there room as their mom yelled at them to stop. Did they stop? Nope. They filled as their mom started threatening to "call dad". And when she did, all he did was yell too. The kids gave little to no shits about the entire situation.
Physical discipline is necessary, just know where to draw the line between "teaching a lesson" and just flat out attacking a kid.