After modifying the primal drive of genetics, survival was no longer the primary concern, and instead, other things, such as beliefs or certain desires, became the leading purpose of life, thereby avoiding the potential for degeneracy.
But this also created other problems… Nothing is perfect, Level 5 Civilizations, too, have contradictions amongst themselves.
"When the direction of progress between different civilizations conflicts, these clashing civilizations could potentially unleash the most dangerous wars."
"Our primary concern is survival, from which various complex interests arise, whereas they do not mind sacrificing their lives for their beliefs."
"So, fundamentally, there's a significant difference in the way of thinking. Do you understand what I'm explaining?"