@YUWIN It has nothing to do with morale. He's in disbelief. I would do the same thing.
Loss takes time to digest, and the bigger the loss, the longer you'll avert your eyes from the truth, until necessity forces to you to accept reality.
When my dog of 13 years died, it took over a year for reality to sink in. To come close to acknowledging his death meant enduring episodes of Depersonalization/Derealization, dizziness, nausea, exhaustion, forgetfulness, and on occasion panic attacks. For the longest time I preferred to forget that I had ever had a dog. I didn't want to remember the blood piss pus and shit that I had stayed up all night and day cleaning as they came out of him in spades. I didn't want to acknowledge that I had lost the only person that I had ever really cared about. The feeling of one clone being switched out for the next persists, as if I'm no more real than the stories I read or write.