Maybe it's also because some people want to be Odin when he spawns again?

Something that I never actually knew before a month or so ago was that whoever deals the killing blow to Odin will determine Odin's race and will be marked with his killer's name the next time he spawns. So for example, if I killed Odin he would not only be represented as a Miqo'te the next time he spawns, but you'll also see a subtitle that says "Skara Brae" on his name.