First of all, the examples you mention - panning, double tracking, effects, backing vocals, etc. - have nothing to do with recording vocals. They are about mixing and arranging vocals for a song. In my opinion, there is no one-size-fits-all with respect to mixing and arranging decisions for any given song, other than to follow the general guideline of "do what sounds best to you, while fixing what doesn't sound good to you" for that song. In my opinion, you seem to be doing this by trying to "mask" your voice with effects. One effect that hasn't been mentioned though, is pitch correction, which might go a long way to helping you "like" what you hear from your voice on playback. Cubase Pro has pitch correction, and there are many VST effects plugins available too. Also, if your don't like "your voice," you could try changing your voice. Just like we can all talk with different types of voices, we can sing with different ones too. Try to mimic a singer that has better control, even if doing so breaks all the rules of how to sing "properly." As a last resort, you could utilize other singers - be they human or artificial.