Sell me on For Honor... Or dont

I reaaaaally want to like this game. I played both of the betas. I had a blast with the closed beta but by the end of the open beta, I felt like the game started to get a bit stale. Now I'm hesitant to buy the game because I'm worried the game won't last.

So sell me on For Honor. Tell me why you love this game, and what aspects or intricacies do you think will keep you interested for the long haul. Or contrast what you dislike about the game and why you don't think it will last