1. When people say they are willing to die for ANY cause, they have no clue what they're talking about.
2. If your religion calls on you to die for that religion, then you know in advance that you won't be willing to die for your religion, so you should view that religion as crazy.
3. If you view religion as crazy, then you become an atheist.
4. If everyone worldwide willingly becomes an atheist, then you have no more religious wars. If it wasn't for religion, then Israel/Palestine wouldn't be fighting. What would they fight over? If everyone becomes Anglophone (not by genociding the non-Anglophones, but by having non-Anglophones learn English and if they reproduce, then attempt to get their kids to become Anglophones), then wars over language differences are gone.
Homogeneity often prevents massive death and economic wartime waste, helping to pave the way for a one world nation, where wars are no longer required as well as people obtaining unconditional freedom of movement to move to any place they choose. Increased education funding can make sure we don't be replaced by low IQ people because they wouldn't stay low IQ.