Do you use your bathroom? If not, what do you use it for?

Although the vast majority of RV owners use all the bathroom facilities, there are a few who:

Don't use the toilet at all
Don't do #2 in it
Some put the used tp in a bag/container

When it comes down to toilet stuff, some people just aren't comfortable with dealing with black tank contents. It grosses them out.

Personally I don't get it but I've worked in hospitals and was a firefighter/EMT.