INFJ - I take long showers. 20-25min. Probably longer if the hot water didn't run out.
It's a place of total relaxation/uninterrupted peace/privacy for me. Having good music on is a plus. I take forever partially because of the above stated reasons, & partially because I'm a tad OCD I suppose about getting all washed up/shampooed/hairless, etc daily and thoroughly. I used to take baths for hours on end, reading in the tub. Not so much since I hurt my back. You'd think it'd help, but I'm too tall to fit comfortably.
I wonder if people who take quick showers enjoy baths/take long ones at all..