How would be the world if there is no suffering? Imagine a world (a planet with humans) without suffering that the people in there are always happy,nothing to worry about.What would be the characteristics of that world ? 
At least,Can we define the characteristics of that perfect world ?

Edit: I got this question by listening to Dhamma on Eight Worldly Conditions (Ashta Loka Dharma). Either good or bad,every person have to experience profits,losses,praises,insulting ..etc.It is equal to a person in a heaven and also in a lower realm. If world have only 4 rules (only profits, praises ....),Would it be perfect ?
Good question.
Suffering should be fully comprehended.
What exactly is the definition of suffering?
Is been poor suffering? 
Will your suffering be eliminated if you become rich?
We all know about this kind of suffering.
What Buddha taught was more profound than that.
It is not easy to comprehend.
Buddha taught three kinds of suffering.
Dukkhadukkha
Viparinama Dukka 
Samsara Dukkha
Only Buddha taught Samsara Dukkha.