It is known that grandparents take care of grandchildren is becoming a reasonable phenomenon in many people's eyes.
However, whether grandparents should take care of grandchildren or not.
There are many reasons which trigger this phenomenon. The following two are the most important. On the one hand, Parents have little time to look after their children, because they need to work to earn their living. On the other hand, after retiring from company, most grandparents maybe feel alone. When they care for the children, will be satisfied with the life.
In my opinion, the most suitable ourselves is the best.