there's nothing wrong with having a personal preference and asking for it to be respected. i think we do have to be able to be honest with ourselves and have a clear perspective on whether we really need something or whether we are just being precious. wanting to be alone in the bathroom for example is probably a pretty reasonable ask, all things considered - it just depends i think, it requires judgment. but if someone is really hurting us by their actions, and we have asked them to please stop but they haven't, why is it that they haven't? sometimes it is possible to find a way to protect ourselves within or remove ourselves from the particular problem situations, when the other person is not able to provide us with that level of respect - to find it in ourselves and assert it fearlessly and respectfully. this is preferable i think. other times this is not possible, or their willingness to cross our boundaries for their own purposes is pervasive to the relationship.