absolutely hate puzzle caches. Usually just pass them by. My mind is not geared to figure out most of them and I find it frustrating to work on them and never figure them out and not be able to get help from the CO. I do intend to do my own though which will give all the puzzle lovers in the area something to chew on. I figure that the way my mind works puzzles, they will be in my position trying to figure out my train of thought.
Personally if the site outlawed puzzle caches it would not bother me in the least.