I feed live food to my gar because they won't eat pellets, so live it is. Minnows are great, but I like to vary their food, feeding them just one thing. There are fish in pellets . The fish in the pellets are farmed just like roseys or guppies. At least I can control what the guppys eat, and can provide them a good home.
I disagree with not feeding live every once in a while, I do my best to replicate a natural habitat, I enjoy seeing my gar stalk a minnow or my festae catch ghost shrimp. I feed them pellets and sticks, so they can be healthy. Its a part of the hobby that I enjoy the most. I respect your humanitarian views, its good to see someone that is adult enough to voice their opinion, and still respect mine.