Pitch correction has its place. I have been known to use it on my recordings, but the key is to make it subtle.
It makes me sound like I can almost carry a tune in a bucket.
I'm really not a fan of the sound where it is very obvious, as heard on the rap/grime/whatever tracks my 18 year old son listens to at high volume in his car, but I'm not the target market for that stuff and he seems to enjoy it.