Is a dishwasher really necessary?

Dishwashers are often considered the most expendable of the three major kitchen appliances. Storing and cooking food are essential, after all, but more easily cleaning dirty dishes is a mere convenience. But convenience is just one of the reasons why you should own a dishwasher.

Is it cheaper to hand wash or use a dishwasher?

Is it cheaper to hand wash or use a dishwasher? In most households, the dishwasher uses less water than hand washing and is, therefore, a cheaper alternative to washing dishes by hand.