in my amateur historian opinion… having grown up Episcopalian (we had nuns, just most people didnt know that)
The religious orders are almost a defining characteristic of “Catholic”
when you hear nuns, and monks, and such you immediately ASSUME Catholic (unless you are Buddhist) and when the Protestant reformations swept through, well. they could convert the churches to their use, but Monasteries and Nunneries and such were useless to them… big. tempting… juicy… profitable… bits of land and buildings, once they got rid of the religious.
so the groups that came from that… have no positive experience with such. all they think of is whatever they get from pop culture, and their church
which is often bad
in at least a few of the churches i have visited, women’s highest calling was held to be motherhood… and a woman who didnt get married was a social embarrassment, but all they talked about “nuns” was "poor women locked up because their families didnt want to/couldnt marry them off.
and thats about what i got in school history (public school) also. that nunneries, and to a lesser extent any of teh monks and priests… were places for the nobles and etc to “dump” their extra kids
if thats what you knew about religious… i doubt you would think very highly of them