If you knew this to be the case, the rational thing to do would be to avoid solving the puzzle :-)

Agreed, but there is at least one possible scenario (where I don't know it is the case) where it would hurt me to be a superior rationalist.

Religious people would disagree with you here, I'd imagine.

I imagine they would. Because they would disagree with me, I'd like for my beliefs to challenge theirs to trial by combat. That way, the wrong beliefs might be destroyed by the truth.

This is another minor nitpick, but AFAIK not all Christian sects demand tithing (though some do).

Sure, 10% is not true of all Christian groups. To my knowledge though, all such groups run on donations from the faithful. If the number isn't 10% it is still greater than zero. Arguments here are over scale and not moral righteousness.