I was spanked by good, well-meaning, parents a handful of times as a child. But I don’t spank my kids. I’ve felt like it. But I feel like doing things all day long that I don’t act on.
I also don’t let my toddlers bounce around the backseat without a seatbelt, or leave them alone in the car while I do errands, or drive with them after having several cocktails, or sit them in a room filled with cigarette smoke for hours – all of which were totally normal when I was coming up.
When you know better, you should do better. Just because something was common in my childhood doesn’t make it right.