Many people use their wills to express disapproval of others.  This Jewish man used his will to encourage his descendants to marry Jews. Four of his five grandchildren married Goyim, and were disinherited.  The family is suing each other left and right, so his will had the effect of breaking up his family rather than preserving its ethnic purity.  What a shame, because his intent was admirable.

I want to put in my will that only people willing to pierce their own genitals without anesthetic (with their own hands, no Piercing Pagoda for you!) in the presence of witnesses can share in my estate. No weak willed pansies are sucking from my dead teat!