I suspect a basic variance will be needed, but nowhere near as strong as humans have. In many ways it could be counterproductive. The ability to spin off temporary sub variants of the whole wound be useful. You don’t want them deciding they don’t want to be ‘killed’ later. At the same time, an AI with a complete lack would likely be prone to self destruction. You don’t want it self-deleting the first time it encounters negative reinforcement learning.