there are a number of guys on here who work extensively with gars outside of the forum...i believe you've just met peje.
as far as pellet diets go, i believe quite a bit of research goes into identifying imporant characteristics of artificial diets & identifying strategies that help gar larvae accept an artificial diet. If i'm not wrong, several hatcheries also use an artificial diet to accelerate the growth of their gar from juvenile to commercial size
anyone want these articles?
for the most part we encourage a varied diet. i personally go with whole fish (from the market), market shrimp & pellets. again, it's pretty much never a good idea to compare fish to humans. that kind of logic almost never works.
although there's nothing wrong with trying to give ones fish the best (read, most beneficial) available diet, i agree that some people take it too far in, as you put it, "feel(ing) compelled to feed their fish "just like it would eat in the wild." ". especially when they gauge the quality of the feed by what it is (store bought feeder, store bought mice, -
or as one member memorably fed - KFC chicken

) instead of it's nurtitional value to the fish.
i'm greatly out of depth here especially with reGARds to the more "scientific' information, so feel free to point out any mistakes in whatever i've said. athough i'm hoping my reading of journal articles (do u guys call it that too?) will have paid off.
cheers,
alex