Bringing this post forward again from the last thread (it was filled with typos as I was scrambling before the Y2K so it probably made zero sense!):
As a poster mentioned early on when he said he didn’t suspect that Kenzie would have been on the property when there are other mountainous areas that he could have disposed of her body, which was entirely plausible, the fact that he did NOT do that demonstrates imo that he obviously wanted to take pleasure in having the fire and experience that for himself, similar to as he wrote in his book. I think he may also have wanted to “KEEP HER” for himself on his property afterwards and perhaps also take pleasure in this as well, just as some serial killers do. Jmo.
(ETA: I had wondered about this early on, if he would turn out to be “this type”, as opposed to dumping her on the side of the street, or in a dumpster for example.)