The Greeks did not spend all of their time at war. Many of their inventions benefited their people and trade with the world.
It was the Greeks who learned how to mass-produce terra cotta lamps. They figured out how to make a mold for the top and bottom halves of the lamp and then put them together. They were so good at it that they were soon exporting their lamps to other countries.
When you wash your hands, remember that the Greeks first invented soap when someone discovered that ash mixed with fat changed the fat's composition. Later on, soap would be perfected by the Arabs.
The first home heating system was invented by the Greeks. The Romans went on to perfect the hypocaust system so that the homes of the wealthy could be warm all winter.