I don't personally have a macerator, but I can think of some ways it would be used. Have you ever gotten home from a trip, and weren't able to dump? Like you dumped before leaving the campground, and then Junior (or was it Missus), had to use the potty before you got home?

With a macerator you can hook up a standard garden hose, and dump all the way into your house toilet, or if you have a small sewer access, you can do the same. Not being able to dump at home has been an issue for me in the past.

Obviously, you wouldn't want to use that garden hose for much else??

ray