Man of Honour
Because some people don't have bathrooms the size of a postage stamp?
Sinks mounted in cupboards are typically rubbish, 9/10 you end up getting water all over the place because you can't get as close to the sink.
I have a cupboard mounted sink and water doesn't go anywhere except in the sink?
A bit like this:
http://housetohome.media.ipcdigital...anity-Unit-With-Sink--Tap-from-John-Lewis.jpg