Well . . . they can be. An old, hard to clean shower, not so much.
So what you need is to have that old shower torn out and a wonderful, mildew-free shower built-in, just the way you always imagined it.
Multiple shower heads will give the ultimate in a relaxing shower experience. Including rain shower heads, side wall heads and the traditional will allow you to vary your shower experience each time!
Be sure to have fun selecting your tile for the shower; get advice on what kind of tiles to have installed, but colors and patterns are up to you.