To each their own but I don't know what skooma you're sipping to prefer this over something as impressive looking as Black Desert. I can only comment from the outside as I only know what a friend has showed me but it looks leagues above this game (no offense ZoS).
My love for TES and being on console are the only reasons I play this game but if I were on pc I would likely prefer BDO or that other fancy looking flying mmo.
Black Desert Online is still the new flavor on the block. Also it is a different game altogether. ESO is based on a long running series of games that everyone loves and is familiar with.I had planned on purchasing BDO,and still might.
Impressive looking doesnt always mean great to play,or great storyline. For many people those two things are worth more than "pretty".