Im in this boat: Quit MMOs after WoW due to being sick of them. Tried conan, Star wars: old republic and guildwars 2 all - but quit them all due to being sick of MMOs.

However - I LOVE the elderscrolls series.

Do you guys think ES: Online will make MMO feasable again even after MMO-sickness when the elderscroll universe is the deciding factor (Love the univers + lore)

If you are sick of MMOs then don't look to TESO to save ya, TESO is a MMO of that you can be sure.

They are trying to make the game approachable to single-player elder scrolls fans as well, meaning that side just might appeal to you, even though the game is an MMO. I believe the lore and setting factor may be enough, I know that is the major appeal to me. Just any fantasy game MMO with the features elder scrolls online has doesn't appeal to me nearly as much as an elder scrolls MMO, with the races I love and the places I love.

Well, they create rpg online game in a first place, so yes - I guess you should check TESO.
BTW. I get bored with mmo as well.

It would be interesting to know why the OP is fed up with MMOs, all we have is him/her saying they are sick of MMOs lol. Gives us some of the reasons why you feel this way and then we can debate from there.