Are both Capitalism and Communism silly because you really end up more tired and exhausted and hungry than before you did the work?
no, you are stupid.
You seem to have the wrong idea about what communism is. In communism you work according to ability and receive according to need In fullblown communism, money and barter can be abolished In actual communism (nor in actual socialism), there is no upper/owner-class to be pampered, so you wouldn't work as hard as in capitalism
Communism is a classless stateless society, in which work will be made as interesting and rewarding as possible, with working hours much less than under capitalism.