Kind of like my opinion of organised religion in general. Just christians we have how many denominations? Every one a little different from the other, and every one says you have to do it this way or your going to h###. They cant all be right, and they cant all be wrong.
For those many of us who have studied the faith for years, we are well aware of the basic doctrine.
There are some fundamentals in which a firm belief is required for salvation..the rest is open to discussion and debate.,
For instance, mandatory, no debate:
A) Jesus' blood cleansed us of our sin..
B) Jesus is our savior.
C) Jesus was miraculously conceived.
D) Jesus is the Son of God...and God the Son.
Points of disagreement which do not affect salvation:
A) What kind of music is appropriate for church?
B) Jesus had brothers and sisters.
C) Should we drink alcohol or not?
D) Tongues or not?
It seems to be primarily the points of disagreement, freely debated issues which bring about the various denominations.
They can differ in those questions, and still be a solid Christian body (IMO).