Nature or Nurture?

What am I doing to my kids? It makes me wonder whether I am too strict or not strict enough. Am I so strict that I drive them to act crazy sometimes? Or, am I such a push-over that I let them do crazy things sometimes? From the frightened look on my son's face after he spilled his bowl of rice all over the floor followed by his elated smile as he proceeded to clean it up by eating and licking it directly off the floor, I would say it was a combination of the two. Obviously he expected me to be angry because I constantly harp on him to face forward and eat over his plate so that he won't spill anymore. I also make him clean up what he spills when dinner is over sometimes. In fact, that is what I asked him to do when he starting eating off the floor. When he started, however, I was so shocked that I decided to give up. I put my elbow on the table and rested my head on my hand while I finished eating. So, perhaps I'm not strict enough. Maybe it's not just our parenting. Knowing me and my wife, he likely inherited the push-me-too-hard-one-way-and-I'll-bolt-the-other personality. Knowing our parents, however, he's probably also inherited the tendency toward random craziness. Whether nature or nurture is responsible for it, All I know is that I have a headache tonight and it won't be my last.