Or maybe you know more about Joseph's life and death than non-Catholics and would like to show why this is not a possibility?
Why do you have to come up with these wild theories based upon nothing but post 1500 protestant conjecture? It is really sad. The Catholic Church has the history of the Holy Family from day one. It is an unbroken tradition. Why invent new stuff that does not simultaneously jive with sacred scriptures (your welcome), tradition, the early church fathers, the councils, the teachings of the Holy Father?
I think maybe the satanic desire to diminish the role of Mary the Mother of Jesus in our salvation and in the Church is the motivating factor here.