The reduction of suffering is also not a universal aspiration; many thinkers believe that meaningful suffering is desirable and necessary to form an identity and find meaning in the universe.
“Only the English [philosophers] want to be happy.”
- Friedrich Nietzsche
Personally I remain unconvinced that this drive to make everyone everywhere look, act, and think the same way is desirable or conducive to actual diversity. It mostly just makes the world less interesting; McDonalds and the western business suit replacing centuries of local cuisines and clothing. Solutions should instead focus on how to manage various ethical and cultural values under the banner of a secularized political state. Otherwise you’ll get secession and fracturing into smaller states, which are highly undesirable from a geopolitical perspective (see: Germany and Italy prior to their unifications in the 1800s.)