Recently I found this (from Buddhist sites)
In the mid-sixteenth century, when Father Francis Xavier arrived in Japan with the hope of converting its people to Christianity, he was shocked upon encountering so many Buddhist monks involved in homoerotic relationships; indeed, he rapidly began referring to homoeroticism as the "Japanese vice." Needless to say, Father Xavier decided it was his duty to rid Japan of the "sin of sodomy." Xavier wrote, "We frequently tell the bonzes [i.e., Buddhist monks] that they should not commit such shameful sins; and everything that we tell them amuses them since they laugh about it and have no shame when they are reproached about so vile a sin." It appears, however, that Xavier and his fellow missionaries did not manage to convince a majority of Buddhists. It is reported that on one occasion, as he and a group of missionaries were walking through the streets of Yamaguchi, a gang of youths began yelling at them, "So you're the ones who forbid sodomy!" The youths then began throwing their shoes at them.
Now you know why they would take a male child from every family in Tibet and other Buddhist communities and give them to the monasteries.
Well now that I've angered the Catholics and the Buddhists, I have to go (I have to take my son to his homecoming), and I'm NOT anti-Catholic for anybody's information.