Questions about example sentences with, and the definition and usage of "Hating"

A: ehm...so the -ing form with preference verbs is grammatically incorrect so I suggest you don’t use it at all.
Some people in very very informal contexts might use it to express immediateness but nevertheless it is grammatically wrong.

A: "I hate myself" sounds more natural, we don't need to use progressive/continuous tense in this kind of situation