You're creating an intimacy that everybody feels, that it's their experience, not yours. I'll never introduce a song and say, now this song is about 'my' broken heart.
So much of what we do as artists is a combination of personal experience and imagination, and how that all creeps into your work is not so linear.
But the greatest thing about music is putting it out there for people to figure out. You want the listener to find the song on their own. If you give too much away, it takes away from the imagination.