If a toy from Toy Story died, the kids wouldn’t know, and the other toys would have to watch the kids play with their corpses.
Jesus christ
The reality is much stranger than that, because there is no evidence to show that the life of a toy would ever end unless its entire body were vaporized or melted. If toys could die like living creatures, the monstrosities created by Sid would be impossible.
It stands to reason, then, that if a toy were to get permanently stuck and become isolated somewhere (say, some worse variation of Lotso’s fate), unlike a living creature which can eventually die of thirst or starvation, it would have no way of ending its own misery,
Frankly, I don’t know which one’s worse.