My WAW said the exact same thing to me - she didn't see us in the future together. It has everything to do with her seeing me not as an "equal" anymore, as someone who doesn't challenge her, and that is who she wants to be with, and who I used to be. I challenged her at first, but I haven't grown in the same ways she has and now she's with OM who is busier, more involved, and doing something similar to her. She sees me as someone who is resigned to life and she wants to be with someone who pursues life.
I say all this (I haven't read through your sitch) in case any of it rings true. Just brings up the old DB point - work on yourself, make yourself happier, remember who you used to be and maybe she'll remember too. That said, maybe you aren't the type of person your W wants, and that's okay. You need to determine who you are and what you want out of life. The rest falls into place.
