What you're describing here are rituals, which can be based on and built around any belief.
Yet it didn't. What I am describing emerged from a historical context. There are archeological finds of religious scriptures and other relics, right. We have buildings like churches and we do still pray and practice.
Neither the pre-Christian practices nor the Christian faith had arbitrariness as the foundation of their faith, but principles. Arbitrariness - any belief - can be understood as a fashion, as a trend, even as a whim, for example. Which is something else.
You only allow me the interpretation that both the historical Christians and the contemporary Christians have not given important meaning to their phases of life. And yet that is what they actually did.
If a book like "Lord of the Rings" had been written in the ancient past and had had the potential to underpin the important stages in people's lives with an order, containing certain principles connected to birth, death/burial, conduct of life (do you consider those stations important enough to celebrate/honor in what context I gave ?), then perhaps a Bible would have emerged from it, a work that seeks to communicate a religion in language.
It would then have been interpreted and reinterpreted by a great many people over the course of time. That is what happened to the Bible. Arguing continues and I welcome that. Therefore I say that the ground on wich the ongoing argumentation takes place is not obsolete but wanted. It too, develops and changes over time.
The fact that Christianity, because of its spread beyond a local supra-tribal level, gave people a remarkable freedom of movement (traveling throughout Europe), so you didn't find a completely different culture just a few kilometres outside your village, comes to my mind. As modern people who like to look at the exceptions and evil methods of exploiters - who cunningly put their intentions under religion and its attendant authority - does this mean, as a consequence of that, to throw out the ideals of that religion? I wouldn't think so, I think it underpins them. To argue that such people who abuse religion for themselves is the opposite of Christianity is therefore all the more legitimate in my view.
Regarding to marriage and the role of women, I have a total different stance on it but I may publish something which, in case you are interested, touches upon this matter.
Is it the number of people who believe in it, as you suggest in this last response?
Of course and I am a Christian myself. I already spoke against extreme Christian notions and argued that the average Christian is nothing of an extreme kind. You seem to believe it otherwise. How could you possibly know if you aren't around practicing Christians or were raised so (which I assume you aren't)?
So I ask again: what makes the Bible special? If it's not written through "Divine inspiration", what makes it better than The Lord of the Rings? If the Bible isn't the word of that special, infallible being you say you need to have your inner conversations with, what exactly makes it special then?
I gave you my answers on that. There is nothing more I can do about it, so I leave it.