The great philosophers say we must not fall prey to greed, desire or pleasure.
Or, they say create good habits to live a good life.
Or, it is the cultivation of a good life that will make a happy life.
In this sense, there is no need to preserve it, record it or make a profit from the ability to do it.
Hence, the wise ones became students, teachers and read and wrote about it to create a happy life for themselves. And they were happy to plant the seed in all they touched during the process.
This is not a religion, psychology or some kind of higher purpose.
Only humanity is capable of using the faculty of mind to create a truly happy life.