Are you tellling us that the Bee Inspectors you have talked to have NEVER seen healthy untreated colonies ? If so, send them down to my area and I'll show them a few that are doing very well ... and not just mine.
You are clearly one of those people who, when I first started beekeeping, told me I would be a danger to other beekeepers in my locality and my bees would be dead in three years ... well, guess what, they were wrong !
I'm not averse to treating either my bees or my pets ... but I work on the basis that 'as and when and if needed' and after thorough checking - not just because 'people say I should' without any thought behind it.
I stopped getting my dogs vaccinated annually with their 'booster' injections years ago when it became clear to me that the injections were just making the dogs ill, one was getting eczema immediately after the booster injection every year and another just looked really under the weather ... my current vet tells me that he doesn't give his dogs annual boosters either - But still continues to let people pay for their dogs 'boosters' every year !
I have a friend who insisted on putting a flea collar she got from her vet on her 8 year old cat when she found ONE flea last year. The cat almost immediately developed a major skin irritation around her neck and the vet said it 'might' be irritation from wearing a collar so swapped over to a spot treatment (another £30). Ever since the cat has been backwards and forwards to the vet with skin problems erupting all over and fur loss - but no fleas. I asked my friend if her cat had ever had fleas in the past and she said - NO ! I suggested she was treating a condition that possibly didn't exist and that could be causing the skin problems - the answer - well that's what the vet recommended ! I suggested she change her vet but apparently the cat likes the vet ... I'll bet the vet loves this cat as well !!
Yeh .... this is not directed as a criticism of vets in general - but at the mindset that says 'treat just in case'. I think it's wrong .... do you take an aspirin four times a day in case you get a headache or Lemsip in case you get a cold ?
We had a cat unfortunately. no longer with us, she had an immune issue, later we found out, and we stopped using SpotOn for Fleas, when she we get nose bleeds, after applying it..... the Vet stated they had never heard of it.
Since that day, we have never treated any of our cats for fleas, and we stopped with her. (and that was over 15 years ago!).
None of our cats have fleas since (and we do check them, with a flea comb, and they have excellent fir!), and even the vets are surprised, they have no fleas, no treatments, and they also quote, they have excellent fir.....
in fact the only time, I remember any of our cats having fleas, when we had some kittens, and at six weeks old, they had fleas, from their mother!
and we combed them, because they were too young for any treatments...