Because, you see, Mary was a super-human goddess, who had no need to offer marital love to Joseph, or to love God by properly loving the man God had put in her life. She could please God by defrauding her husband, you see, since, like Nietzche's "superman," she was "above" the mundane obligations binding upon mere humans. Therefore, since she was a superhuman goddess then, we can appropriately worship her, and pray to her, today.
Calvinist would say God "programmed" her to be a mindless but obedient vessel, a robot in God's Plan, which is better than being a goddess? How dignified.
We Orthodox believe and have always believed that Mary was an oridnary human being who devoted her whole life to God, out of love for God. Some people find that offensive (envy?).
She could please God by defrauding her husband, you see, since, like Nietzche's "superman," she was "above" the mundane obligations binding upon mere humans
I see where your priorities are. After all, God must take the back seat when it comes to pleasing the husband. Joseph did not have to stay married to such a woman, you know. He could have divorced her. But he and Mary realized the awesome task that was entruted upon them and they stayed true to God.
Of course, Calvinism can't see that. They were, after all, just "pre-programmed" to do God's will, so there was no sacrifice, humility or love involved; just plain robot-like obedience, since "free will" doesn't exist.