Here is another worthwhile quote from C.S. Lewis, just shortly after the one at the end of my previous post. It comes from the section on temperance in Mere Christianity.
One of the marks of a certain type of bad man is that he cannot give up a thing himself without wanting every one else to give it up. That is not the Christian way. An individual Christian may see fit to give up all sorts of things for special reason– marriage, or meat or beer, or the cinema; but the moment he starts saying the things are bad in themselves, or looking down his nose as other people who do use them, he has taken the wrong turning.
This is most certainly true. We’ve had enough personal theologies masquerading as Biblical injunctions and “the only way true Christians should act” over the years.