I would not. The thing of integrity is to understand and struggle to accept the teaching that is diffucult for you. This path involves much work and much penance. Telling Christ "I disagree, -- you won't have another church for me, would you?" is a sin greater than contraception.
By saying I salute armydoc's integrity in leaving, I was comparing him to those who disbelieve, but remain anyway. To quote Marcus Grodi, the difference between a dissenting Catholic and a Protestant is that the Protestant has integrity.