Most of the objections to a composting toiler can be answered by watching this video.
https://www.youtube.com/watch?v=5CdnVZkCKXU .....There are several other videos in the series that are VERY informative.
I don't have a composting toilet, but after watching several of the video's I would seriously consider getting one ..... especially if something went wrong with my current on that I don't feel like fixing.
I especially like the idea of doubling my gray water storage ..... and they claim that there is NO odor .... less smelly than a standard RV toilet.