On Being Dismissive / Acting Senseless

My Blue Planet memory reflects the dismissive attitude people have toward Nature: As a boy, my father used to take me fishing at our local lake in rural Illinois. On one particular fruitful day, my father, my friend, and I caught about 40 bluegill fish. We kept them on stringers in buckets, knowing full well we did not intend to eat them. After 8 or more hours spent in bloody, brackish waters in which the fish gasped and struggled, we unceremoniously dumped them back into the lake. Every single one of the fish floated to the top, dead. It was a senseless act on our part in the truest form - we just weren't thinking of their wellbeing. The sad memory still plagues my conscience.