Both the trolls and night elves are two of the most ancient and renowned civilizations in the World of Warcraft universe - they have definitely shaped its history in both positive and negative ways, and have established massive empires and nation-states as old as 15,000 years ago. They are both possessing a glorious, proud heritage and an immensely rich and sophisticated culture - and they are among the two most popular races currently.
I personally think the trolls were given a very interesting and well-developed, complicated, multi-layered story the last expansion, with lots of fascinating and popular new characters (such as Zappy Boi), whereas the night elves have honestly not quite been treated to the best story by Blizzard, I don't think they got one new major character the last expansion for example, and even the Darkshore warfront seemed very average at best in comparison. The trolls have recently gained almost everything - while the night elves and their people have lost nearly everything in turn. If they fought again today...I fear the night elves would likely not win in their battle, as they did over 10,000 years ago.
Which of the two peoples and civilizations do you prefer, if you had to choose between them, and why? What do you love most about them, and what do you dislike about them? Which do you personally admire and respect, and which do you think has contributed more to the greater good of Azeroth and its peoples?