Don't forget Hannah Montana! She came out with an auto-tune microphone for kids, which made me dislike her even more xD;
If you use auto-tune for select parts of the song (and I mean very selectively, not for the whole of the song) for artistic purposes, I can let it pass (like some Asian artists, such as 2NE1), but for the vast majority (if not the entirety) of the song? No. Just, no.
I've been singing since I was a child (due in no small part to my family's church), and I can hold a note pretty okay. I've been told I have a strong vibrado (and one friend compared me to a Korean singer she's a fan of in terms of vibrado), but otherwise I'm rather average.