You know the Uchiha clan having a mental disorder actually adds a bit of realism to the series. All of the clans practice inbreeding, and inbreeding often leads to mental disorders as the genes that cause the disorders are enhanced.
One of the main reasons inbreeding is looked down upon is because it enhances the genes that cause problems and the genes lose diversity in the offspring.
I am actually surprised that other clans don't suffer from mental disorders or some genetic defects or hereditary diseases.
Do you guys agree that it adds a bit of realism what are your thoughts?