Don't use it when you're trying to be serious. It should just be for good fun, something to make people smile at a cute robotic voice. Honestly, if you want to sing, just train your voice. Perfect pitch is a memory game. You can remember a song perfectly in pitch if you practice it long enough. Just don't use an oid. It's like musical aids. xD
Some people do it for internet-fame, but all in all...don't do it. If you're doing music for fame, then you'll just fall like a lot of people do. People who are famous in music love people hearing their music, but they work hard for that. When you're going the easy route, it's a slap to the face to the -serious- folks. So, please, don't use it. It's not a natural thing to do anyways.
Yoshiii343
Or they cant be bothered to try singing or find a singer
Sol
And there's billions of people on the internet every day, more than millions or even a billion of them are great singers.
THEY SHOULD TRY IT FOR EVERYONE~
More fans.
More good reviews.
More likes on YouTube.
And less work (depending on their pitch but still easier than both of these things that only makes words connection vowels and stuff like that).