OK, so to start out, there's been so many theories about Toy Story over the years, Buzz Lightyear as a character being the hottest topic. One of the biggest mysteries STILL to this day is why Buzz seems to be the only toy that has the misbelief that he's the actual character Buzz and not a toy?
When we were kids watching this guy, we were under the impression he was the super confident cool guy who knew what he was doing, especially with his supposed mission. But now come to think of it, he never really had agency since he constantly has to be a space ranger. He needs to be a space ranger to have meaning. And what's even more strange is in the supposed "Lightyear" film, unlike Disney princesses, we never get to see Buzz's actual true origin. We never see him as a kid or who he was before he became a space ranger.
I've seen a guy mention how Buzz is actually a sufferer of DID due to his identity being screwed with in the third movie and his disassociation in the first movie, and come to think of it, I realize who Buzz shares some chatacteristics with: Master Chief from the "Halo" games.
This Spartan soldier was taken to a program where he was replaced by a clone of him to replace him with his family, essentially never had a childhood, and pretty much knew nothing besides warfare and protecting humanity all of his life. What if the same backstory applies to Buzz?
This would not only explain Buzz's need and almost religious devotion to being who he is labeled as, but when he first awakens in Andy's room, he doesn't recognize he's in a child's room. This is because Buzz may've been robbed of his childhood upon being snatched to get trained in this so called "Star Command Academy", therefore never knowing a normal childhood.