For the same reasons that men don't say certain things to women.
Unless a man gives a clear signal that he doesn't care, wives will always avoid it. And even then there may be obstacles, for fear of hurting feelings. But for me it's a non-issue.
Very interesting note. Something that certainly marks the point of no return. Your opinion is very important. Would you like to explain this feeling better, what went through your mind at that exact moment?