Did Chamberlain's government's decision to go to war in 1939 benefit the World?

You will always have people who think that it is glorious to go to war rather than seek a peaceful solution. If one is attacked or invaded, then to resist is indeed glorious. But to make war on another state in order to resolve some problem, as Hitler did and as the west has been doing with Iraq and Libya, is not. In the case of WWII, Germany and Japan were the aggressors and would have attacked us after invading other countries.