I feel like it's occasionally good to hear positive things so let's see if this discussion goes anywhere. I will start it off. And remember it is at least one thing. So you can name how ever many things you love about this game as long as there is at least one.
First and mostly, I love that it is and Elder Scrolls game that I can play with other people! I have 99% of the time run into and befriended many helpful and friendly people in this game who were almost always willing to join me in a quest or help out with a Group Boss or through a group dungeon.
I have had higher level people who have already done these quests willing to just come and help out if I couldn't find anyone to join me.
I love the art work! This game is beautiful and really carries on the true beauty of Tamriel.
I have discovered I love being a healer! It is so much fun for me running around kicking
@$$ and seeing someone who is about to kick the bucket and throw a heal at them so they can continue kicking
@$$!
I love the group dynamics of dungeons and how having a group that knows their individual roles and plays them well will make or break how you get through that dungeon. I have played the same dungeons over and over with different groups and some groups were amazing and other groups failed because a role wasn't filled properly and I think that is pretty interesting how well that works.
I love the lore! I am thankful they have carried a lot of the lore over into this game and even some of the easter eggs from previous TES games.
Anyway, I can go on and on. But those are just a few of the things I love about The Elder Scrolls Online. Let's here what you love!!