Yes I agree with you on this differences makes competition our differences has made a lot of challenges which has bring the best out of most people .

difference between the colour of our skin, we have the black and we have the White the black says, black is beautiful.

While the white are also claiming that they are the best and it is making everything interesting this competition makes the world more interesting like you're playing a video game the more the difficulty the more it's more interesting but if it is very simple you won't enjoy the game.