Nowadays it is widely believed that more and more parents are not restrictive enough toward their children as opposed to the former fashion of upbringing. Especially the old claim that children should be taught to obey strict rules. To my mind, to some extent it is true.
First of all, the problem of parents being too permissive nowadays is connected with social issues and today's model of the family. Virtually, the majority of young couples are thought not to be able to maintain more than one child, and it is directly connected to their way of upbringing. Children who have no siblings are allowed more. Ther haven't got accustomed to sharing their things with the others and so they are selfish. It is a negative situation.
Furthermore, what is particularly important and what we should notably take into account, as parents, is our children's cultural and social life. Today children can quickly get into bad company and letting them do whatever they want, or leaving it without any control is not a very good idea.
What is more, children are sometimes lost, they do not think of what they do and what it can cause in the future. Parents' role is to take care of that and sometimes they need to permit something to prevent children from more significant problems.
On the other hand, we need to ask ourselves a question whether children will obey our strict rules and prohibition. What will happen if they become riotous? Sometimes we need to leave them alone and let them learn something from their own mistakes.
To sum up, in my opinion in most cases indeed parents are too permissive for their children, but on the other hand, I am aware that such behavior is based on many social and cultural factors.