Ever seen a copy of the Handbook of Denominations? Holy cow! Latest stats I heard is that there are 30,000+. Christians have had this issue from the beginnig... whether to stick to Mosaic Law or no... then it was "orthodox" v. Gnostics, v. Monophysites, v. Arians, Nestorians, etc. Then Roman & Greek churches split, then the Reformation (the reasons for which are understandable) which has given birth to groups that have split off in every which way imaginable and unimaginable. (The different reformers were more or less at each other's throats, by the way. They couldn't agree on much other than they opposed Rome.)
It's crazy and I'm at a loss to explain it.
No doubt one of the main issues splitting Christians today is glbtq rights. The conservatives won't get their heads out of their butts long enough to hear any other point of view. Rational communication is so important, everyone knows that's vital to relationships, and it isn't happening on the scale it should be.
"And though I may not know the answers, I can finally say I am free. And if the questions led me here, then I am who I was born to be." --Susan Boyle
"If all fools could fly, the sun would be eclipsed forever." --Dutch proverb