In 1913 the world looked like a tinderbox waiting to explode. War was in the air everywhere in Europe and looked to be all but unavoidable. It may have looked like a pretty decent place but that would have been deceptive and I don't think that it looked like that unless you were pretending to not notice.

Nationalism was on the rise, new technology gave access to weapons on an unprecedented scale (and weapons production was already well underway in 1913). I won't say it was inevitable, but it did not take much of a spark to set Europe in flames. People have compared it to a forest with tons of deadwood lying around just waiting for the right combination of draught, wind and a little bit of activation energy.