Don't be to tough on the Puritans. They fled persecution and because of their experience we ultimately founded a nation that separated church and state.
I'm not too hard on the Puritans, as I know they were in a tough historical circumstance. However many parts (at least the more extreme parts) of their theology reflect that extreme persecution they faced, and are reactive.
We don't face those kind of circumstances today--and so shouldn't be bound by Puritan conclusions. Calvin, in my opinion, had a more balanced approach.
The Puritans though are my brothers, and I fully expect to see most of them in glory...in high places too.