alright, it's commonly known that bathroom vanities tend to be 21" deep and 32" high but why is that? i made my bathroom vanity as high as my kitchen cabinets (34 1/2") so that my wife (5'9) and i (5'11) wouldn't have to stoop over so much to wash our faces.

lately i've been wondering about the reasons behind a 21" depth. is it so that you can reach the mirror to wipe it? is it to accomodate the sink size? any explanations would be highly appreciated.

and let's not forget folks: keep it civil