What is the theme in Notes of a Dirty Old Man by Charles Bukowski?

Bukowski's works involve a number of recurrent themes. Sexual deviance is purhaps a fvourite theme of his. Politics are discussed not as a party plea, but as a general distaste for all things political. Religion and God are frequent themes as well. Bukowski counter-culture take on popular culture is still provocative and, in the eyes of many, enlightened.