It does not take deep thought to say "sexism is wrong". 

Your blather "I don't have a "right" to be a priest, because my vocation is to be married." is easily answered: So what? Similarly, I would term your blather about "rights" and "duties" to be blather -- irrelevant blather in this issue.

People have both rights and duties. You are saying that no woman has the right to be a priest, while simultaneously saying that the institutional Church has the "right" to practice arbitrary discrimination.  Your blather about "