I bought one, so it's not a deal breaker for me, but it is a detriment in some ways and a plus in others.
Obviously, the lack of expandable storage is huge, but i also miss the ability to stick files in a place where they can't be erased by a factory reset. I've had to factory reset twice. First time I lost settings since my most recent back up was on the phone. I've since been better about cloud back ups, but that uses data when I don't want to.
On the plus side, it's less of a headache to manage files.
Sent from my Galaxy Nexus using Android Central Forums