I enjoy some of his music. And respect following he created.

You should take a look at his drawings, search a little for those. Example: https://www.gottahaverockandroll.com/jim_morrison_original_pencil_drawing_circa_1957-lot7524.aspx

http://quotingjimbo.blogspot.com/2011/12/jim-morrisons-drawing-from-high-school.html?m=1

By that and other information, sounds to me like he had hard childhood and unhappy life.

Information about him is not as easy to just find, but biography might be interesting read.