*Change is not a bad thing
It depends on what change. WW1 was a change. I'm pretty sure WW2 was also.*
WW1:
League of Nations: raised the ideal of international cooperation; was the forerunner of the UN.
14 Points of Woodrow Wilson: included the right of nations to self-determination and an end to Empire building.
Greater acceptance of women: the war, gave an opportunity for women to take on previously men only jobs & proved a significant factor in giving women the vote in 1919; helped to change social attitudes towards women for ever.
Greater respect for workers: greater importance given to the welfare of munitions workers, trade unions gained in acceptance. Several gains for the poorest in society, for eg when landlords pushed up rents, there was a popular backlash against the war profiteers; the first rent control act was implemented temporarily 1915, permanently in 1920.
WW2:
Technological breakthroughs: Aviation, computers, medicine, founding of United Nations, economy growth, numerous positive societal changes.