Apart from the intrinsic sacrifice of devotion to the needy (the knowledgeable sharing their knowledge).
In practice, the additional sacrifice is, academe generally doesn't pay as well a industry pays workers / employees with similar credentials.
Compounding that, Piggly Wiggley's regional marketing manager doesn't have to correct homework.
So it's more work for less pay, for the benefit of mostly children.
"Honor means sacrificing yourself for the benefit of others.
Dishonor means sacrificing others for the benefit of yourself."
Lanny Davis, Special Counsel to President Clinton