Hey, since you don’t believe me about cats not causing massive ecological harm to local bird populations:

http://web.archive.org/web/20200206053916/www.rspb.org.uk/birds-and-wildlife/advice/gardening-for-wildlife/animal-deterrents/cats-and-garden-birds/are-cats-causing-bird-declines/

It’s also funny you attribute cat’s longevity to the death of predators, and not the fact that there are native cats here and so cats very much, well, adapted to local predators.