#23:

It’s hard enough to clean up tile when it’s put behind a stove, but with a backsplash like this, you’ll be stuck with grease and smoke and dust in all the tiniest corners you can’t get without some serious scrubbing and cleaning. That lovely off-white shade won’t stay like that for very long

Anything with nooks and crannies is a bad design, to begin with, but putting this sort of pattern in a bathroom or a kitchen is the worst absolute choice, and it seems like the most popular choice, judging by this list.