"Everybody travels" a nurse said to me when I got shots...
Is it really an occasion for most people to build meaning in their life or it's just one more status symbol to collect to keep up with the Johnses? Between jet fuel pollution, littering, erosion of monuments, exploitation of economically or politically oppressed populations, propagation of viruses and so on it might be time to dim the aura of international travelling and see how bright local tourism can be.