Cynicism

One of the biggest advantages of being young, is that you are optimistic and see the positive aspects of everything. As you grow older and encounter the darker side of human nature, you become cynical .

The experience you get helps to minimize your losses, but you may also miss out on opportunities as you over emphasize the negative aspects and not examine the plus points. For example, when you are young, you trust people a lot and believe that everyone speaks the truth. That is why most of the users of social networking websites are in their teens and twenties.