You were a very bad person in a past life? ;^)
Seriously there is a reason why we are told "Be not weary of well doing" This is apparently the way things are set up so that we keep on doing the right thing because it is the right thing and not for some future earthly reward.
No it is not fair. It is not even just. But that is the way it goes. Could be worse, you could have healed a crippled and been stoned for your trouble.
If it turns out that you do have to pay the bill be sure to post about it. I am sure we can pass the hat.
a.cricket