Heck, I remember when it was the ultimate luxury to have a phone in the bath....and I thought that was weird then too!!
But the home to which I am referring is south of Atlanta.My issue would be that I like to get the whole room steam bath-like when I shower or bathe, and unless you're talking next generation patio furniture that can pass as indoor furniture, my preferred level of humidity in a bathroom can't be good for upholstery.
As someone who grew up Up North, I can get the heated tile. If you like the look but hate the feel of cold tile underfoot, it's not too weird to go with radiant heat floors, even if you're using the cats as an excuse.