The way you describe the matter is really appreciatable, As I have a hobby in fishkeeping I know the matter but after reading this post now the whole concept is clear for me.
I live in Las Vegas Nevada and have caught in my bait net, jewel cichlids and oscars.... I dont know the impact that it has had on other small fishes such as bluegill but... it is weird.
Whats the consensus on releasing into man made secluded bodies of water like a golf course pond? Also how do people feel about killing your fish just because you cant house them? Both are irresponsible. I upgrade when my fish get too big. Its a good excuse.