There are plastic eating bacteria [https://letstalkscience.ca/educational-resources/backgrounders/plastic-eating-bacteria-natures-recyclers https://letstalkscie

There are plastic eating bacteria [https://letstalkscience.ca/educational-resources/backgrounders/plastic-eating-bacteria-natures-recyclers https://letstalkscience.ca/educational-resources/backgrounde...]. Human cells can also (mostly) function anaerobically (aka in low-oxygen environments). It’s terribly inefficient though, and we can only do it for limited periods of time before something bad starts to happen to the overall organism. So we prefer oxygen, and as long as we have oxygen rich environments, we’re never going to get that much better at being anaerobic eh?