I'm reminded of one of my favorite house tours done a few years agon in DC, Anna and Dan's White House Laundry Loft, where Anna and Dan share a bedroom but have separate closets (Anna has an amazing basement dressing room) and their own bathrooms.
Not everyone has the space, opportunity or even desire for separate bedrooms or bathrooms. In my home we have separate sinks in our shared bathroom, which works well for us.
Are separate bathrooms a luxury you would enjoy? Is it more important to you to have a separate bed or bath?