Minn, perhaps you (and everyone else) should review your comments on this topic before you stand in righteous indignation. Please, tell us how long you've had a composting head on your boat. How long have you, or your "guests" actually used one.
You seem to take every opportunity to denigrate the desiccating head based on your, or your "guests," apparent squeamishness. Perhaps I've missed something and you've actually installed one in your boat. In which case, please share. Otherwise, can I suggest you leave this discussion to those who have actual knowledge and experience.
You're welcome to ignore or refute my comments, but I will post them as I please. I'm surprised you suggested otherwise.
I don't see where I've expressed any anger over morality? In fact, I've repeated more than once, in this thread, that I think composters have their place.
My primary response in this thread has been to misinformation about holding tanks for which I have decades of experience. In particular, I've rebutted the assertion that they use the same chemicals as porta potties and all traditional heads have to smell. One may want to discuss experience with composters, but these other comments are left for all to read and become misinformed.
I have not used a composter aboard and, if that's sufficient reason for anyone to dismiss my input, you're welcome to. Although, why you would care to stifle the experience I do have is mystifying. I have used composting style heads at various off-the-grid camps, without septic systems. While not marine models, it's the same idea and I've experienced their limitations. Those limitations are not addressed very clearly, until amelia's post, if at all. For definitional clarity, the second post by amelia has some good righteous indignation in it.
The most poignant response to limitations is a request to stop bringing them up.
The OP asked to be "talked into it or out of it" by those with experience. While I think my limited, albeit only related, experience applies, I find composter users to cronically leave out all the considerations, although, they are requested.
Whatever decision the OP or anyone else makes, is good with me. See, no indignation.