Melesi - becuase something is done out of principle does not say anything about whether it is right or just or valid. Principle can be wrong, immoral, even sacrilegous.
Also - the argument about condoms is wanting. On the one hand you value the human decision to marry or abstain, yet you do not value the equal human decision to use equally man-made "tools" to prevent unwanted pregnancy and disease. In each instance, someone is making an affirmative decision to do something. Why is it appropriate to do some things and not others to effect the same outcome?