bogi_khaosa, you seem pretty sure of a lot of things, but they are not in the books that the GW team has written, which is what I'm operating on. Our interpretations of the setting may simply be incompatible.
As I said, if you simply prefer a lesser version of the Sororitas and/or are unable to accept the original fluff for supposedly not "making sense", then go with what you like more. For better or worse, 40k as a franchise allows each of us to cherrypick our vision of the 41st millennium according to our personal preferences.
What *I* find lame is when the Sisters of Battle are made too human, as if they're nothing but "Guardsmen +1", but I can't force my preferences upon you, just like you can't force yours on mine. The only solution then is to agree to disagree.
I would, however, like to point out that another "whole point of pop middle ages in space theology" is also that corruption can be avoided if you're faithful enough.
"Prayer cleanses the soul, pain cleanses the body."
- Confessor Ganinimus
In fact, I need only to point to the three possibly most well known prayer-words of the IP:
"The Emperor Protects"
Pretty sure this is an all-inclusive deal, as far as the Ecclesiarchy is concerned. Someone who fell / got corrupted / turned traitor would generally be judged with the words "his/her faith was not strong enough". After all, the Emperor Himself needs to be beyond reproach, being their god, so who else could be the guilty party? What exactly differs the corrupted from the uncorrupted?
The idea that anyone, even the most faithful and devout, can get turned any moment, and that there is no protection against the Ruinous Powers at all, is, to me, utterly alien to what the Imperial Creed is about.
Or Catholicism, for that matter. You're not really trying to tell me that stuff like Exorcism or the prayers to St. Michael have nothing to do with fighting corruption, do you?
Edited by Lynata, 22 September 2013 - 02:08 AM.