You step out of the shower onto a partially-wet bath mat. The damn thing is always damp, because the towel rails are always full. So you end up hanging the mat over the top of the shower to dry, but it never seems to fully dry by the next morning.
Ensuite
You turn on the shower. And you wait. And wait. And wait some more. Annoyed and unclothed, you ponder how much of your water and time is being wasted each morning.
You're using the bathroom mirror whilst applying makeup or shaving. But no matter what time of the day you do this, you never seem to have quite enough light so see what you're doing.
Congratulations - you had the foresight to install a recess in your new shower instead of using an ugly shower caddy that will inevitable turn into a rusted frame after a few years. But there's a slight problem.