Schiller could roughly understand Loki's logic. For a long time—probably from their adolescence into young adulthood—Loki's position had been awkward.
When they were children, they had no obligations or responsibilities. No matter how insane Asgard was, it could not possibly send children to the battlefield. As far as Schiller knew, Asgard's birth rate was low, and every child was precious. The two of them had spent their childhoods in a relatively carefree environment.
But once they began to grow up, they had responsibilities they had to shoulder: like every Asgardian, they had to contribute to their realm through military achievements.
War was a machine that, once started, could not be stopped by any normal means. Every Asgardian dragged into it had their own hardships and lacked any real choice, but they all enjoyed the benefits brought by war profits. Naturally, none of them could remain uninvolved. Odin was no exception.
As the ruler, since he had set this enormous war machine in motion, his sons had to know how to drive it too. Thor, as Odin's chosen Inheritor, had to prepare early so that he could take the reins of the wild horse from his father's hands.
Loki was not the Inheritor. More precisely, Odin could not allow Loki to inherit Asgard. Whether because of his constitution or his identity, Loki could not bear such responsibility, so it was best for him to stay far away from such matters.
Even if Loki wanted to do it, Odin would certainly exclude him from the center of power early on. That was best for everyone. Thor could shoulder his responsibilities better, Loki would never taste power and thus would not suffer the loss of gaining it only to lose it again, and Odin himself could smoothly hand Asgard over to the Inheritor.