The other reasons are the same as the reasons why Christians are divided into dozens of different cults.
Those reasons are the hundreds of different interpretations of the bible.
And the reasons why Christianity had to write several different bibles!
And now the Catholics have needed to throw out Genesis and replace it with Darwin's evolution!
Christianity will inevitably continue to divide.
Some Catholic will call this a lie, or will ask for proof. Here's something to cover the proof but somebody else will have to debate the question of lies with him/her/the apologist.
His wife wasn't able to provide a male heir so England risked erupting into civil war after his death. Pope Clement VII was a Medici pope so Henry VIII was probably not thrilled with that family having so much power in England. It made sense to initiate the English Reformation and consolidate power in the king.