The hack songwriter will write the absolute truth every single word, whether it makes a great song or not.
It's like, it's up to the people to fall in love with the song. The record company can only do so much.
Although, my experience when I've been depressed, not only am I too depressed to sit down and write a song, I'm too depressed to pick up my feet. So if you can at least write about it, you're halfway away from it.
Nobody gets married to a clever song, let alone falls in love to one.
The sheer volumes of songs have come from the hours of cold and darkness that one spends inside with the lights on.