I was sent to Sunday School, as many of us were, and really enjoyed it, I stayed going to church , even teaching the Sunday school until I was about 16, depending on where we lived, C of E or Methodist.
At 22 I sent my DS to a local church sunday school, as it was nearby - it changed my life, - it was open brethren , and for the first time I actually read and understood the bible, and got baptised as an adult.
Guess what - the bible says NOTHING at all about popes, nuns, reverend this and that, dog collars, christening babies so they don't go to hell,confession, confirmation, bishops, diocese ... I could go on.
Basically all that is asked is that you 'love the lord your god with all your heart, and love your neighbour as yourself', an break bread and drink wine in remembrance.
You surely have to agree, that the God bit aside, if we all treated people like we wanted to be treated, the world would be a better place.
I always maintain Jesus was the first socialist....