Those who can afford them?
Ours are all outdoors, but I can see no issue with installing one indoors just NOT in the little girls room.
Actually, they conserve water and septic tanks don't need to be emptied nearly so often. ;)
Poor little gender freaks want into the little girls room and are being discriminated against! Oh Boo the fuck hoo. Nevermind what the girls want.
And the most popular topic on P.A.
You can't make this shit up folks...