Why would she become one of them though?

Job was never in the position of having to kill his son, what happened to him was against his will because god was testing him, I agree with some of what you say but at least make an effort to get it right.

Straight talk then ;-) "William was talking trash about his bosses because he thought he was better than they were"

That is at least what I think is clearly implied by the opening sequence

He called them false Christians & they said he was guilty of prideful conceit => i.e. it is said explicitly that he talked trash about them because he obviously held himself in high regard. That's enough to get you fired

William had the gall to declare that this community, specifically founded to be completely faithful to the "Gospel", was not doing nearly a good enough job. Remember, these were people who left comfortable (for the 1600s) lives in England to cross a vast ocean and settle in a hostile wilderness because they sincerely believed that the official state religion in England (what we now call the Anglican Church) was a hairs breath from what they would have called "Roman Popery", or Roman Catholicism. To them, this was no better than pagan idolatry, since the English Church kept many of the practices of the traditional Roman Christianity (like communion, the sacraments, the saints, etc.) And to be fair, the Anglican Church did come into being simply because Henry VIII couldn't get a divorce from his wife and marry his mistress in any other way but to separate from Rome. Not very holy, that. Henry, and his final successor, Queen Elizabeth I, were lukewarm Protestants and had no interest in making the English Church more in line with the doctrines of the radical Protestant sects of the low countries, which the people in the film follow. The religious fanatics who became the Puritans saw no recourse but to leave England for good, for the sake of their souls and those of their children, since they would have been forced to participate in Anglican religious rites had they remained (no such thing as separation of Church and State in this period.)

The Massachusetts Bay Colony was founded by people who implicitly agreed that when they arrived and entered a settlement, they would abide by the tenets of John Calvin. There would be no other form of worship but prayer, baptism, and the reading of the Bible. Religious variation of any kind could not be tolerated. If any one member of the community deviated from these laws, they were automatically a threat to everyone, since it was believed that God visited his wrath on an entire community if even one of it's members stepped out of line. William may have been preaching an even more fundamentalist doctrine than that prescribed by the Theocratic leaders of the colony. Anne Hutchinson, a real Puritan woman who lived a few years after this story is set, was banished from the colony for preaching, privately, in her home, her own religious doctrines based on her personal reading of the Bible. Anyone who deviated from the norm and did not publicly repent was cast out by force, in the name of the spiritual safety of the colony. That's what happened to William and his family.

It was William's egotistical assumption that he somehow was closer to God than the rest of the colony (which, as a supposed Calvinist would have been blasphemous) that sets him and his family into the clutches of old scratch. The Devil was believed to haunt the boundaries of God Fearing towns in New England, since this was where wild animals and "savages" roamed. By refusing to apologize and conform and taking his family into the wilderness, William blindly put all their souls in mortal danger.

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Well I think youre bringing up a good point because it seems as hardcore as they are there isnt a society in existence that could satisfy their brand of Christianity. So they isolate and isolate until the basic meaning of Christianity, that of love and forgiveness gets completely lost and you are just running away from demons. As Ive said its a self fulfilling prophecy because they talk of God but according to the family he is nowhere to be found, only evil.

That is such bullsh!t! Wow.

You are correct, specially since that would reveal his character. What if he was actually in the wrong? It's important to know. This movie is very flawed.

Telling your daughter to cook dinner is repression? Since when? It wasn't like anyone was sitting on their ass while she did all the work. I seem to remember the father busting his ass in the pouring rain to make sure there was firewood to keep the family warm, and hunting with his son to have dinner to cook in the first place. They were living on a farm. Farm life is repressive to everyone.

Christ if cooking dinner is your idea of repression then you live a dangerously sheltered life.
I remember being 9 years old and made to walk 2 miles in the blistering cold to fetch groceries while my mother was at home working to support me. It never occurred to me to consider that a life of repression and control. Was I wrong? Unbelievable.

And the witches were not hated by Satan anymore than a slave owner hates his slaves. They do his bidding nonetheless. They belong to him. They are owned by him. Why is it repression and control when she has to do house chores but liberation when she is condemned to a life of murder and dark magic? This makes no sense. Her soul is condemned to hell for the rest of eternity. And that's a better and more liberating alternative than having to cook dinner?