What motivates one to correct another's flawed thinking?

In addition to the question title, overall, what is the rate of success for correcting another’s flawed thinking?

Thus far, the common answers I was given were overpowerment, survival, and altruism. Their success rate ranged from none at all to minor success.

When questioned why continue in a task with little to no success, the answers ranged from “i don’t know” to “I must be a masochist”.