It is the right mind set but he should truly try to enjoy himself in the meantime, when everything is done in such a cold and calculating way, it's not fun anymore, it makes me feel like the MC is sad and burdened rather than on its way to the peak of the World, if you know what I mean..
im cringing so hard, this past few tens of chapter is full of angsty, sadboi, emo cringe, just reading what the mc thinks gives me secondhand embarrassment, i might be too old to read this type of novels.
Don't get the whole for the betterment of the world thing, if he can be honest to himself that he is just using the girls then he should be honest enough to accept that he just wants power.
