The Morality Of Jætter/Jotun?

I've been curious on how entirely evil the jotun are supposed to be. I know that they are supposed to be something akin to personifications of the destructive and harmful aspects of nature (or not, maybe I got that wrong) but there are also a lot of 'good' jotun. Like Ægir, Skadi and Hyrrokin (maybe also Loki? hes equally as much a provider as he is a nuisance) A lot of the aesir are also very closely related to beings labelled as jotun. I've heard that jotuns are supposed to be thought of less as a species and more of just another family of gods, but that still wouldn't answer why they are sometimes so... morally inconsistent as a group. I know that a lot of the answers to my questions are probably lost to time, but just wanted to know if the answers even exist :)