Growing up with animal mad parents, we always had both cats and dogs. And birds, fish rodents... the list goes on. I'm more of a dog person deep down, but still love cats and adored mine. After losing my cat Leo, 17, last year, who I took in as a stray when he was a kitten, this is the first time I've not had a cat, and I do really miss having one! The family cats we had when I was a kid were let outside whenever they wanted since that was normal practice in the UK at the time, and all of them were either unwanted pets that they took in, strays, or in one case, semi-feral cats living in a colony behind their pet shop while we were living in the flat above the store and they ended up taking care of. They fed one skinny female cat who was so starved that she collapsed when trying to run away from my mum
then over time the entire colony learned that there was a reliable source of food there and more and more arrived. They were abandoned pets, from an animal hoarder house nearby.
They closed the business and moved out when I was six, and mum talked to the RSPCA about the colony and hoarder that the RSPCA had refused to help with previously apparently. Said that we're moving away and would be taking two of the cats with us. The female who had collapsed that first time, and a tom cat with a paralysed tail that we'd become attached to, but that we couldn't take any more than that, that the colony was going to be in trouble once we left. Apparently the RSPCA did rescue the rest of them, no idea what happened with the hoarder. Once neutered and cared for again, both cats became the sweetest, most affectionate, and laziest house cats imaginable. They did go out sometimes, and the tom occasionally bought back a bird which really upset my dad. He loved the cats, but hated the hunting, and was very conflicted about it, as am I.
One part of me wonders if it's cruel to get a cat that never sees the great outdoors. That feels un-natural to their nature in some ways, you know? I do prefer that people keep cats indoor only because I'm aware of the devastation they're causing in the wild and hate it! And we're responsible for it by having cats and allowing them outside, then when they hunt, shrugging it off as part of their nature. It is a completely normal thing for a cat to do, as they've evolved to do it. But we're spreading so many of them around in places that didn't have cats, and wiping out other species. That isn't okay either. No problem when they're catching rodents since rats and mice are hardly endangered, but we can't teach them to hunt those, but ignore those songbirds. So I'm very torn on the issue on personally owning cats, even though I love them and want to keep them, and would take in another stray in a heartbeat. But completely agree with them being categorised as an alien invasive species because they are.
People complaining about it are being defensive from an emotional place, thinking of their own Tiddles, who goes outside and "has never hunted, I swear!!" or "he's only bought back a bird once, and helps get rid of mice!" Just because the cat didn't bring his prizes back as gifts doesn't mean he hasn't killed wildlife. The facts can't be argued with. Cats have wreaked havoc alongside us as we've intruded on and devastated ecosystems everywhere, and the numbers of birds and other critters that have dropped or been wiped out by cats don't lie.
I don't have an answer really, except that the only real responsible thing to do is accept the facts and contain our pet cats, only having them outside in cat runs or on a harness.