I know cats and how to maintain a healthy cat too. I also know kids and how to maintain a healthy child. However, I still take my pets to the vet and my kids (before they became adults) to the doctor for annual checkups. They need their shots and a physical exam in order to help maintain their health to the best of our ability. Vets notice things that we might not notice. Like the lump our vet found in our beloved golden retriever's neck years ago, or the ear infection one of my cats had that I wasn't aware of. Let alone the annual shots and worming.
Personally, I agree.
I just think it's unfair to judge one for not doing what I think is "normal".
When I was a kid, excepting the time I spent more than 3 months in the hospital, I might have gone to the Doctor's 3 times...in my entire life!
Same for my 7 Brothers and Sisters. If it ain't broke, it didn't get fixed. :)
:O)
P