Just as the highest and best use of computers is to provide insight, the highest and best use of robots is to relieve mankind from the drudgery of stultifying, mind numbing, repetitive work, and in doing so generate more time for the arts, athletics and intellectual pursuits.
Using robots will cause other problems. Robots will replace humans, who will lose their jobs and have no income anymore. Robots will in the first place replace low educated people. The challenge will be to find other low educated jobs for these people. If not unemployment cost will rise and consumer spending will go down. Unemployed people who have no income will not enjoy more time for the arts, athletics and intellectual pursuits.