Scotishmummy, I'm basing any assumptions I've made on this thread on my own experiences.
I bonded well with DS1...I could never, ever have left him with anyone else, although I did leave him with my mother while he was asleep, and, hopefully, wouldn't miss me.
I didn't bond with DD until she was about 9 months, I think, and was quite happy to leave her with any one while I went off where ever. Only I had no one to leave her with.
If a mum has a great bond with her baby, has chosen to bottle feed, and can happily leave the baby with other people while she relaxes and enjoys herself regularly, then that is absoulutely fantastic.
I'm yet to meet any such new mum.
I'm sure lots of Mumsnetters have been able to manage it, though.
And I find "accusations of mum struggling to bond" really quite offensive, as if struggling to bond is a crime, rather than the result of an illness.