每天冲个淋浴和局部多次冲洗并不矛盾。Douche after sex is a very good application of the device.
Bidet is small in size and can be installed in small appartments or dormitories where shower doesn't exist.
American men can be very ignorant. They don't know everything. And they don't know how to use everything. This won't stop them from pronoucing useless about things they don't really know.
