The caste system was developed long ago in India as a divisionof society based on the quality of a person’s personality and the type of workthey do. There were four categories of people. In the Bhagvad Gita,
chaturvarnam maya srushtamgunakarmavibhagashah
tasya kartaram api mam viddhy akartaramavyayam
“the system of four castes has been created on thedifferentiation of qualities and actions.
Brahmins were the first group of people and were considered tobe peaceful, calm, quiet, and spiritual and their work includes study,teaching, and priestly activities. This is the simple meaning of Brahmin,.Brahmins usually lead strict and disciplined spiritual lives, practisingdifferent religious rites and rituals and helping people to live a religiousand spiritual life.
Sir, I subscribe to your logic to an extent.
But based on Gita, who is a Brahmin.
If you go by your logic
guna karma vibhagashah.
It is not by birth. So you will run into trouble of caste system.