At base level the size of my harem is inversely proportional to the duration of my refractory period. Another variable at play, on top of that, is that I generally prefer getting to know the "haremees" individually and remember their names etc.
Nuns are only alluring if partially undressed. Then it is like they are meeting you halfway on that "road to perdition". If fully clothed in the "armour of God"; it would be an effective deterrent, for me at least.
In silence and in darkness, some light is tolerated. I need it to be fairly cool in the bedroom, preferably with an open window or even a crossbreeze in summer.
I find that the more games I have played, the more I skip. It gets boring with the recurring tropes. But if the story is good I will make the effort to follow along.