Even if XP computation awarded a point for every up-vote, you'd still not be receiving your due, because AM's can't vote, and many who should don't. Being under-appreciated has traditionally been a side-effect of altruism. Some even seek it, as a guard against pride.
But God demonstrates His own love toward us, in that while we were yet sinners, Christ died for us. Romans 5:8 (NASB)