the plot forces you to suck off to a nation of slavers and rapist who hate one race cause they aren't the same.
To be fair, no one side in this setting is absolutely good, but considering what happens
immediately after you side with the beasts, going from 0 to 60 with the wanton pillaging, raping, and killing of even children with malicious glee, the lore that different tribes of beast still regularly kill
each other even while the war is happening, as well as the fact that it turns the character into a ruthless monster who will stretch logic for any excuse to torture and kill their former friends just because they're human, the plot makes it
very hard to feel bad for them after seeing all of that.
Siding with the elves isn't much better, considering some of the people you work with are just absolute assholes or shady as all fuck and the fact that it guilt trips you by making the first potential LI
hang herself if you go the route of choosing any of the other ones, or just kind of agree with the hard choice of keeping her safe only to then be hit by that shit out of left field. Yeah, so far it isn't so much that I like the human route the best as it's that I just strongly dislike the other two and feel the human route is the only one I can actually kind of enjoy. You also cannot call them a nation of rapists, we've only seen one instance of that and it was hidden off in a corner like it was something that soldier should not have been doing, meaning it's not allowed. There's also the hope that you can change things from the top eventually.
As a final small point, the route differences in this game also stem not from your choices but in changes to other characters. The wizard chick just swaps personalities for the human and elf route, the deviation stems from how she reacts to you, not any action of your own, which means we can assume that characters across different routes can similarly become different people and you can't trust any vision of them from other routes, the facts can just change.
As a final final small point, I also like the human route as the only that doesn't shift the character's design. Those changes go against the idea that everyone can eventually get along and forces it onto you that this cannot happen and that if you change sides you
need to absolutely abandon your former self and humanity as a whole, labeling them all as an evil to be killed, which leaves you right back at square one. The beast route is by far the most aggressive about this with how the character is suddenly okay with things that previously disgusted them because it's fine now that it's aimed at humanity. Everyone here starts out as wanting to kill the other without any compromise, changing routes does not change this.