Movement is too difficult out there. Especially those being literally dragged down by their Sins. It's both like you're freefalling through the vacuum of space while also being yanked into the very depths of the ocean. There isn't any pain, but you're sorta just in for the trippy hell-ride at that point. Like Isabella, you can ignore to the Goddesses advice (though to be fair, she was not really informed), and try talking to the dark voices if you so desire. 

Doing so earned her a minor 'peculiarity', by the way. 

[@Rune_Alchemist][@Erode] If you two were joking and are okay with it, that's fine. I just didn't know, and didn't want to risk having just a flame war breaking out.