We are told that we need to make a contribution. To be useful, to be a tool. Why is this?
Has humanity become happier by acting like a tool?
Do people feel worthwhile and needed because they have a role to fill?

As an adult we are asked to define our contribution, to be something useful. 
This may sound positive but how many people are doing things they do not want to do?
How many people are fulfilled?

Often the pursuit of one action has an unforeseen side effect. Unforeseen consequences.
Pollution. Toxic waste. Garbage. Stress. Injury. Physical strain. Psychological problems.

The Industrial Revolution reduced the human being to a cog in the machine.
Is this all we are? Really?