Wow, Wanna! That's a great feeling for you! Not to mention it leaves that much less clutter in your new place. They will be thrilled with the donation and you have the opportunity to rebuild stash with things you actually like.
I find it funny how we buy fabric and then later one "don't care for it". I have a few dresser drawers full of stuff like that. I need to either use or purge. Maybe I'll keep your good feelings in mind and get the "toss it" bug!