I've been trying to decide if I should restart this one -- only written up correctly... but, it seems that the discussion has taken off on its own ! As for bullocks and gussets, it depends on what you are wearing, but I can tell you that you do not necessarily fall out
In fact, unless you are wearing some of the really low slung or thongs, you'll be fine. The question that I should put in another thread is "if you do wear women's panties, why and how does it make you feel different enough to do that?" As for the why there can be many reasons, the materials and styles alone are one: men's underwear is generally BORING and expensive compared to women's. Underwear has two main functions, to protect your other clothes and to be sexy. The first is easy, use whatever works. The second is where the "meat" of the discussion is !! (sorry, could not resist the pun).