Who doesn't wish to cast the hurt away? Judaism has two similar practices related to the Day of Atonement (Yom Kippur) about it, so it's very much been present here.

And yes, repetition can be beautiful, yet in most places outside poetry and mythology it is frowned upon. And I've always been drawn to the mythical storytelling structure, so it's always been something I've soaked up over the years.
Thank you for the kind words, and yes, I too find the repetitive poems to be especially beautiful :)