They may not be just for public washrooms anymore.
It may be an ideal addition to a workshop. Saves the hassle of cleaning up just to come into the house.
It may be a better option for people with mobility issues. For example, a urinal takes up less floor space, which means more room for wheelchairs or walkers. And standing from a sitting position may be easier than going from one seated posture to another.
It may allow a couple to use one bathroom at the same time, assuming a certain level of comfort.
A common bathroom in a rental property or holiday home may allow for multiple users at the same time, and make better use of limited space.
Potty training for boys may take on an interesting dimension.
If you install a waterless urinal, you'll save water, obviously. They're also not much more expensive than a regular urinal, and only require a connection to the drain stack.