I did not feel instant love for either of my kids.
I was attached to them when I was pregnant, but once they were there, for some reason the attachment didn't transfer. It was temporary, of course. Within a week or two I was head over heels for her. In the hospital I kept touching her, amazed that she was really mine, but there wasn't any maternal attachment yet, just fascination.
When I had my 2nd, I spent the entire 3 days in the hospital missing my firstborn (during swine flu, so she couldn't even visit me) and when we finally got released, ran inside to see her, leaving my husband to carry the infant carrier in for me. I interacted with my 2nd with the same strange fascination, knowing she depended on me, but I admit I was glad she slept so much so I could focus on my oldest. Took a little longer to attach to her, but it happened.
I'm hoping it'll happen a little sooner this 3rd time around, but my girls are older and not AS needy, so...