Correct. The Thirty Years War killed about a third of the population of the Germanies; the Wars of the Three Kingdoms (often erroneously called the "English Civil War" -- there were at least five wars, in England, Scotland, and Ireland) killed about 10% of the total population of the British isles.

Those wars scared everybody who'd grown up in the affected territories off religious absolutism for a very long time -- at least, off religious absolutism by the standards of the time: things were still grim by modern standards -- and created an environment in which philosophers could develop the ideas and concepts of the enlightenment without being burned at the stake for heresy.

The Arab world looks to be on the skids heading towards its own equivalent of the Thirty Years War right now. I just hope the eventual outcome is positive, and that they get to it faster and with less bloodshed.

And yet that was the result. The price paid for it was enormous and it took time. The question is only if we're willing to repeat this in Europe again.