By contacting the RSPCA and hanging posters you are in no more a rural setting than I, and are doing as big a disservice to the animals in your care as I would be should I allow my dogs the same freedom to exercise their natural instincts in an unnatural environment.
as none of my cats have "vanished". and the time involved is decades. it would seem "my way", causes no problems. whether in rural, or urban, environments (and i have lived in both), cats can go free. and, even in the heart of the lake district. (keswick) posters and reports of lost cats, reach the RSPCA. you seem to be under the misapprehension, it only operates in urban environments. in the UK, nothing could be further from the truth.
you will notice i use "I" through out my posts. at no point did i say "everybody" should act as i do. though, from a personal point, i feel they should. to suggest i am failing my cats, would require some evidence that they have, suffered, or been disadvantaged in some way, by their freedom. even the "5 day trip" is quite normal for a pet cat. its, often, during these trips cat learn valuable life lessons. if you are suggesting that only rural environments are safe for cats to roam free. the truth could not be more different. apart from cars/roads. rural environments are far less safe.
the fact remains to "force" a cat to stay in, after enjoying freedom is, to me, wrong. if that is the environment you inhabit. DON'T GET A CAT. as with chopping off tails, de clawing, tooth extraction. appalling abuses of the power we have over animals. and always to force an animal into a situation to which they are unsuited. this is wrong to me. as i have said to you before.
the silver shark comment is still valid. i chose that fish because it needs space to roam, not water volume because it poops a lot. lol
and the "inbreed"? these are the only cats that can not, or most cant, venture out side. we have also spoken, before, about the actions for the Kennel club and its "inbreeding" program. my views have not changed, and are at least consistent.
salornights6 was kind enough to offer me advice on how to act, after my cats return. i answered, making my reasons clear. as i was asking for no advice, mealy posting to celibate what is, in effect, a right of passage, for a young cat, advice from, anyone else, (in that direction) is unnecessary.
as to how others treat and keep their cat. that's up to them. however they decide to do it. with the caveat of the "Frankenstein" organisations of the breeders(cats and dogs) those i will always campaign against.