People just arent used to cannabis like other drugs due to its illegality. Parents buy cigarettes and booze in front of their children and plenty of parents use these in front of their children from birth. As we all know just cause something is legal doesnt mean its ok. I personally think all children should be allowed to grow up without any drugs present in order to insure a healthy mind and body. Once they are mature enough to decide wether or not to use anything, let them make that decision. Parents are role models for children and if they use any drugs around them or expose them to a certain enviroment. Then they are most likely going to do the same and at a real early age because they are so impressionable.