Human nature is lazy, but we cannot be lazy because we have to eat. Without work, we shall have nothing to eat. To work is forced by our stomach.
Children do not have to work, but they have to go to kindergarten at age three to four. They have to learn knowledge for use in future. If they do not learn at childhood, they will be ignorant. A person without education is like a high quality animals.
Animal also cannot be idle. Unless they are in infantry at which stage mother animal will feed them, but once they grow up, they have to find food by themselves till the day the die.
We, human, are different in some particular case. An idle person can also survive by the support from their parents. Even they do not work, they can live in parent’s house, eating food cooked by parent, just to be a useless person.
But, if a person with high ability, he can support many persons to live on under the shadow of his big tree. Indirectly, he is creating an opportunity of more idle people.
In this world, most people are lazy, less diligent people. That is why rich persons are in the minority, poor in the majority.
Lazy people work less, playing more. It is the reason that they can only keep their life to live on, impossible to be rich to enjoy luxurious life. Remember, no pain, no gain which is the rule of human life.