As an aspiring singer, I am not interested in using Autotune for any reason other than to find the note that I need to hit in a given line. If it's noticeable that I'm falling flat or sharp on a note, I will sing the line containing that note until I get it right. If I can't get the note right, I will re-work the melody. I don't mind adjusting the volume of my notes, as mine admittedly tends to rise with my range. In addition, Dustin and I will copy and paste any repeated sections of a song to save time. However, that's the only kind of studio magic you'll hear on an album featuring my vocals.
My goal with the upcoming Katagory V album is to present a performance that I can re-create live as accurately as possible. I've already spent countless hours singing my lines in the studio (much to Dustin's chagrin, I'm sure!), but I can at least listen to the recordings knowing that I alone sang every note on the album. I understand the arguments for additional uses for Autotune, but that's not how I want to approach my music.
Stay metal. Never rust.
Albert