Your legally caught fish is entirely your business what to do with it, throw it back, eat it or mount it. For the ones that have an opposite view, let them do as they see fit. I c&r as I don't like the taste of bass, wouldn't eat anything out of these Florida freshwater canals and as mentioned above mercury content, especially for pregnant women, and it just isn't bass, some saltwater species too like swordfish.
If I'm not going to keep them I certainly won't leave them on the bank, sure I'll toss one to a bird once in while, just for the sake of thinning them out. I don't want the flies, the buzzards or any other critter coming to feast on them, that may be health issue.