...for the Christian faith to survive it will need more unification rather than splitting up..

The word "Catholic",meaning "universal" reflects the fact that this has always been, and continues to be the aspiration - not too successful much of the time. But the fact remains that the Catholic Church does include by far more of the world's Christians than all other denominations put together. It's mainstream Christianity - warts and all.

Like anything human it's imperfect, and needs constant fixing and adjusting. Sometimes the fixing and adjusting isn't done too well, and re-fixing and re-adjusting is needed, time after time.

I'm reminded of the stuff Obama said about America aspiring to build "a more perfect union". Same thinking really.