The real reason I follow it is because it is choice in a very constricting magical community. One group will say "You have to believe this and this or you aren't us.". Chaos magic is basically "Whatever the heck you want, if it works, go for it!"
To go personal, I consider Eris and Hel two of my patron goddesses, Pan/Bacchus/Ares/Odin/Thor my gods, and though I don't pray to them, I still use them in my work lightly. Mostly I don't do a lot of high magic stuff though, like big rituals so I don't need to appease them. I do sygil work and reiki.