I love the romantic rear views InterBlog demonstrates. However, any time your rear doors can be wide open you can also be outside, stationed for a view in any direction. When I need to batten down the hatches due to rain, dew, cold, bugs, or campfire smoke, the rear bath leaves the cabin of my Travato 59K wide open. We have a rather panoramic view even when closed up. And the open cabin leaves lots of free room behind the galley to reduce scooching when someone is busy there.
Other reasons I like the rear bath are easy cleaning and wet access-- wet shoes, direct garden hose to prefill the black tank, etc--and the bath is large enough to act as a comfortable private dressing room. Nice for a quick change into a swim suit in a parking lot. I would miss not having any rear doors at all, but maybe those layouts have other advantages. And I have to admit I have had juvenile fun weeing to a beautiful view with the back doors open
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