I was smacked and beaten (with slipper/shoe) frequently, by both parents, sometimes leaving bad bruising. I wasn't an intentionally naughty child; I was a high academic achiever and never got hit at school although others did.
I was eventually (in my 40s) diagnosed as autistic and it's clear much of my childhood behaviour that 'earned' smacks and beatings was a facet of that - being unable to do certain things due to what we'd now call sensory issues, having meltdowns because something was 'wrong' in my world and I couldn't put it right, or being seen as rude/cheeky due to tone of voice and being precocious in my vocabulary.
My parents have never said (in later life) that their behaviour was wrong, in their view it was what everyone was doing at the time, including schools. I do accept this to a certain extent but I think the severity and frequency of what happened to me was wrong and beyond what can be excused by 'the times'. This is why I am strongly in favour of banning smacking - then there can be no excuse, no crossing of a line between a 'token' smack and a beating.
I do feel this has affected me in adult life, for example, finding it difficult to recognise and extricate myself from abusive relationships.
My parents are now elderly and mentally and physically enfeebled; my mum in particular has become very 'childlike', it is hard to believe what they were like back in the 70s and 80s. My sister and I do our best for them. In some respects, they were good parents - I can think of many times they went to great efforts to do nice things for us - so I try to remember that side of my childhood, not the 'dark side'.
I don't have children of my own, but based on my childhood experiences, I don't apologise for having an opinion on smacking; that it should without question be banned.