Patrick,
I totally understand your perspective, sometimes KISS is truly the principle that reefers should adhere to you. I know this won't make you a convert, but I feel that the higher degree to which you can automate, the more likely you are to take care of things that are not automatable (pretty sure that's not a word). Also, with space limited applications (Biocube 29 cabinet) having 10 mechanical times is not practical. Finally, being able to monitor the tank remotely when I'm out on business reduces my stress, and my wifes stress. For example, my 2 year old son had a friend over who knocked the MP10 magnet from the tank. Wife texts me, fairly distraught. I tell her not to worry about it AND TURN IT OFF FROM MY PHONE. Truly amazing technology.