@Eric6025
Don't worry, I don't see your comments as a personal attack on me or on hosts in general. You're asking a question in a perfectly reasonable way. I'm just trying to give a perspective from the host's side.
Of course, things do vary from place to place and water costs might not be an issue in some areas. Here in London we are facing the driest weather since 1976, so it's an environmental concern, not just a monetary one.
However, I have been a pretty active member of this CC for a few years and have learnt a lot from hosts around the world. Using professional cleaners is far from unusual, especially in the USA (not sure where you are from, but your references to dish soap, septic etc. made me think you are possibly American), and there they are way more expensive than here. Just the other day, I was chatting to an American host about cleaning costs and couldn't believe that in his neck of the woods, you pay minimum $50 an hour. That adds up very quickly. I do not charge a cleaning fee (except for when my guests want me to clean their rooms during the stay, and that is optional), but I can see why US hosts do! Like I said, I don't think that guests should be required to do the jobs I mentioned above at all, cleaning fee or no cleaning fee. I was just trying to give an idea of the many things that go into getting a listing ready. Guests generally don't notice all the work that goes into it, but they do notice if you cut corners!
I'm sorry that you've stayed in places that have cleanliness issues. Unfortunately, the quality of Airbnbs varies enormously. I do not offer 5* accommodation. The reason I have a lot of 5* reviews is because I put my heart and soul into it. I have an old house, in a state of 'organised chaos', where there are always some repairs to be done, and three cats floofing everywhere. My cleaners just come once a week to do the communal areas and I do the rest of the cleaning myself. However, my time is also worth something. While I don't make a fortune through hosting, I wouldn't be doing it if it wasn't economically viable. There are many, many hosts like me around the world. I know this from reading the conversations here.
Whichever way you look at it, hosting larger groups is going to incur more expenses than not. How much a host should charge for those additional purposes... well, only they can decide, because the expenses will vary enormously from property to property and, as you mention, region to region.
Also, while some guests like you might be conscientious, not all guests are. In terms of cleaning and energy consumption, the host has to base this on the 'average' guest, which only they will know based on their personal experience or, if they are a new host, whatever advice they are being given or making some kind of guess. I have heard of some hosts though who offer a refundable cleaning fee, i.e. if you leave the place in a good condition, you get the fee back. I have never tried it myself as I don't charge a cleaning fee.