They understood with reason, but their emotions could not bear it.
For the current powerhouses of the Divine Land World, the majority of them were in such a state.
Even when the human race had not yet monopolized the Divine Land World, and there was a significant threat from the Demon Race, it wasn't that the human race was completely united; they had their own factions, constantly embroiled in conflict and slaughter.
It was only due to the great threat of the Demon Race and the crisis of racial extinction surrounding them that they suppressed these issues, preventing a total eruption.
Yet, even so, the different parties usually did not interfere with each other's affairs and would not engage in interaction unless necessary.