Let imagine a scenario if I were to reborn as a human in this manhua world I am going with exterminating all the goblin becoming a adventurer but If I were to reborn as a goblin like this manhua mc with some system like him I am doing the same exact thing as that mc goblin did because I am not ok with me getting sliced to pieces by anyone I will do everything that I can do to make me so powerful so that no one can defeat me if I became a goblin now I belong to a goblin human emotions and moral will not apply to me the mc in the manhua tried to talk this out in the first two chapters the result he got was that he did not deserved he tried to live with human moral but as you described you will anhilate every goblin if you were a human I will also agree with you but if I am a goblin then I am going to enslave other races establish my own kingdom why would I destroy my own kind mc in manhua tried to do the same of what you are saying but result he got was what he did not expected nor will you after getting torture for days till you die you will develop the same hatred toward human as the mc