I think you make a good point. I can't sing well either and I love to track multiple instruments in my home studio, and I couldn't do that nearly as well without modern technology.

I guess I'd rather listen back to my crappy vocals and think hard about what I didn't like about them though, and work on improving that rather than try to make it something it's not with pitch correction. But everyone has a different way of working that works for them I suppose, which is why I ended my original comment with "each to their own".