I’m just so not believing those lifespan claims. I’m not dignifying them with the term “cite”.
They all seem to cross reference each other, unsubstantiatedly. I have yet to see anything with an academic study. There are two academics, whose work is selectedly cited to say “indoor cats good” (though I don’t know it wasn’t extracted from a positives and negatives list), and still with no actual lifespan numbers given. I want a journal reference, not gossip.
I don’t see why the human society should get any more credibility that the UK RSPCA has that counter site which I already mentioned. And a friend’s outdoor cat just died of a heart condition at the age of 17. This seems pretty normal in my experience. I’ve also seen one or two sites repeat the same statistic but for “feral” cats, instead of outdoor cats. I can believe that more easily.
Now, looking at my two cats, it would obviously be cruel to keep them in. They love it outside. They chase butterfiles, roll in the dust, stalk each other through the grass, srop their claws on the trees, doze on the roof of the shed. They use our garden, which is their territory, to bury their wastes. They HATE litterboxes and stopped using it the second they were allowed outside for the first time. They rarely stray past those boundaries. They are wormed and vaccinated and they appear to have a modicum of street sense, or at least think the road is off their territory.
Also, personally, I think the chance of them being taken by a random torturing psychopath lies roughly somewhere between being hit by lghtning and being hit by a piano falling out of the sky. If that’s not the case for you, well, I’m sorry for you, and I’ll go back to that fearsome and derogatory adjective “sad”. Go on, pit me now. “Sad”. “Sad”. Ooh err. I’m such a nasty person.
As for behavioural problems, it is quite true that indoor cats have more, and it’s basically because of boredom. Obesity, hairballs, inappropriate scratching & litter use etc, etc. But probably everyone here with an indoor cat has given them many toys and companions and food puzzle games and climbing frames and scratching posts, and are careful not to overfeed them, and give them that special indoor cat food with the anti-hairball whatsit - so it’s really more of an issue for careless owners than for you guys who care for your cats.