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All kinds of worship of Odin and Perun, they are good for fantasy, and people did not want to live under them, and when an alternative appeared, went to one where there is at least forgiveness.
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of course! Until the Greek monks appeared, we sat on trees and could not write.
I will not speak for everyone, but my ancestors fled from Novgorod to the north of Prim. 600+ years ago from your good religion.
“Fire and sword” into Christianity, including the reformed Tsar. So the people “go” into the cult of all-forgiveness without a little 800 years. Fortunately not all went away.