I wasn't put in a car seat, either. I am not screwed up. I would NEVER think of not using a car seat with a child. This type of logic is not a valid argument.
I fail to see how hitting a child is sending any kind of positive message. Children do not NEED to be spanked, therefore, why on earth would you choose to inflict pain on your kid? I don't understand...
As for "spare the rod and spoil the child", I call bullshit. None of my friends or family spank. We are regularly told how great our kids behave. That's no coincidence.