Carpet doesn’t have to come in the form of tiles.

Wall to wall bathroom carpets are a warm and splendid way to curl one’s toes into something soft and dry following a bath or shower.  Padding onto a tile floor in the dead of night for some “constitutional” also cries loudly for some sort of alleviating floor, to relieve the cold damp tile feeling from freezing one’s feet in place. Wall to wall carpeting would seem to be a marvelous solution to this problem.
But, naturally, there are drawbacks.  What one trades for true foot comfort one pays for in upkeep and the constant need to maintain a hygienic environment.  The nooks and crannies of the fabric of carpeting is a virtual medium for bacterial growth.  While it is possible to maintain hygiene, it requires a much oftener cleaning and with more stringent cleaners, specifically those dealing with bacteria in general.
But all things considered, if one is willing to go this extra mile in the care and cleaning of a wall to wall bathroom carpet, then the option can be absolutely delightful.  It looks good, of course, it feels great and is a soft and warming surface onto which to alight from one’s bathing.  For those people who have a minimum of traffic through their bathrooms, for example childless couples or singles, this feature might just be an awesome and far less tiring up keeping proposition.  More traffic, however, will always mean more work and more cleaning. All in all, I love the idea but would shudder at the maintenance, when all is said and done.