One day I ordered octopus tentacle from a tapas bar, and it arrived whole (and beautifully presented as a centerpiece of sorts). This surfaced many memories of nature documentaries demonstrating the wit and resilience of the octopus.
Looking at the delicacy artfully arranged on its plate, all I could think was "Jesus, that's _someone's arm_ we're eating!"
Took a bite, nearly threw up, and haven't eaten octopus since.
Melanie Joy speaks wonderfully on this subject and your realization: https://www.richroll.com/podcast/melanie-joy/
But considering that most fish species are endangered and basically all of them are contaminated by plastic, there is good reason to avoid seafood altogether. Unless perhaps if you know that it has been fished sustainably from a local stable population. Which still wouldn't change the issues with the plastic.
Alligators may seem "dumb", but they're smarter than us, if you go only by success. We don't know what all those nice sunbathes do for the animal.
Could bring the same joy and nastagia as climbing to the top of the mountain. Who are we to spoil this? How is it different from the joy we experience, or that of an octopus, pig, dog, ect as it frolics in the fields?