I too, commend them.
At its core, belief (especially regarding the supernatural) is not really a choice one makes. After all the information and analysis and mind games, you simply believe something, or you don't. But you don't really consciously choose.
If your BF cannot accept and respect your core beliefs, as you accept his, he(and others like him) will likely treat you in a condescending manner if he believes this is a conscious choice you make. Ultimately, he doesn't want you to seek and find the truth, he simply wants you to believe as he does. In this sense, he is the one who is "lost", not you. And without mutual respect in a relationship, the outcome is inevitable.
...This above all: to thine own self be true,
And it must follow, as the night the day,
Thou canst not then be false to any man.