I wasn't physically abused as a child either, but I was emotionally neglected. My feelings were never validated and I could not be who I was supposed to be (and now I have no clue). I wasn't hugged much, so I don't know how I would've reacted in the past, but now I don't like to be. I usually put my arms in front of me to block it, or feel very awkward if I do hug someone back. I don't seem to be able to let in any caring, loving feelings from anyone. Once, my T hugged me, and I actually felt like she cared and it scared the sh** out of me. I really have no idea why this is exactly, but you aren't alone in your feelings about hugs.
My best to you.

PS. I like cyberhugs, as they are very non-threatening!