@spendius,
What would you say Frank if your neighbour's wife asked you for a shag, as some do to my personal knowledge, and her husband said it was okay or he was somebody you could see off with one arm tied behind your back. Answer for your 25 year old self. No dreary, droopy excuses. She's a bit of alright.
Okay. The Church knows all about that. Suppose it was 12 months in the nick under the scientists and being on the register for life, and if they allowed a free-for-all we would be back with the buffaloes. That would deter most I think.
On the other hand 969,699,996, 000,000, years or parsecs (add triplets of "0"s to your taste, eternity is a funny thing), burning in the deepest pits of hell with devlish fiends pouring boiling lead in your ears, hardly deters any healthy young man. And if you seek absolution from the priest by confessing your sin, error under the scientists, so that the Church can keep track of how much adultery is going on, and any hotspots, in order that arrangements can be made to adjust the rate to manageable proportions you only have to say 3 Our Fathers and 3 Hail Marys, and with practice it doesn't take very long, but an impression is left, however vague, that one ought to be a trifle ashamed of oneself and thus less prone to falling into depravity again.
On the 3 strikes you're out principle the scientist would operate on your dick. And don't kid yourselves they wouldn't.
The Church isn't called The Whore of Babylon for nothing. What would be the point of shagging your neighbour's wife if it wasn't a sin? Or an error?
No wonder it has imposed itself on the world. Think of New Zealand 1000 years ago and think of it now. Christian values, whatever dickheads are running the show, are everywhere. Right under your own noses.
Do you know what went on in Greece and Rome at their most civilised moments. You would go to sleep hoping you wouldn't wake up.