Parents are too permissive nowadays

Nowadays it is widely belived that more and more parents are not restrictive enough toward their children as oppoused to former fasion of upbringing. Especially the eldery 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 parenst being too permissive nowadays is connected with social issues and today's model of the family. Virtually, the majority of yound 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 sibilings are allowed more. Ther haven't got accustomed to sharing their things with the others and so they are selfish. It is obviously a negative situation.
Furthermore, what is particulary important and what we should especially take into account, as parents, is our children's cultural and social life. Today children can easily 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 couse in the future. Parents' role is to take care of that and sometimes they need to permit something in order to prevent children from bigger 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 parenst are too permissive for their children, but on the other hand I am aware that such behaviour is based on many social and cultural factors.