If my death will prevent you from establishing a foothold on this world, then it is a good death. Start posting swans and be useful or get out.
They're gonna shit on everything and kill everyone. Have fun! *Disappears into the Warp whilst laughing himself shitless*
Actually, BL disagrees with you. You can repent Chaos. You'll probably die doing so, but at least you save your soul. I can think of two stories that portray this.
People go with other people on Picnics? What? Does that come with protection for Crazed Space Marines?