Religion or gender preferences being too personal i can understand, buthow could that be too personal?
Won't burglars find it out anyway, like by observing the place's apparent richness?
It's a cultural thing... Switzerland is even worse in that respect. How high your salary is is considered at least as intimate a question as "what did you and your wife do last night". In higher positions it is common that you are not allowed to disclose your pay except to official sources and closest family.
