Odpowiedź:
Telephone/Handy
Children spend all their time on their phones. Causing them to have mental illnesses and also destroys their vision. Though, the phones are not only meant to play games, but it would be definitely better for all of us.
Computer/PC
Computers are meant to be for working, writing essays or playing some games. But the computers got the children and adults all addicted. Only to play computer games. If there were no computers, there would be no mental problems and humans would surely find other way to play games, or write some documents.