When I was 14 someone gave me a guitar and taught me three chords. I wrote a song. Now I'm sure it wasn't a very good song, or maybe it was. Maybe I was so swept up in creating I was oblivious to "rules and formats and conventions" maybe I made something really special. I don't like rhymes you can hear coming two lines away or chord changes that are obvious or even comfortable. As soon as something sounds even remotely commercial I have to change my approach, or start again.
Some of my heroes: Joni Mitchell, Laura Nyro, Tom Waits are all artists who made music their way. There are many more but you get my point.
I want to listen to raw and honest even if it sometimes makes you think wait, what? Or especially then.