I like loveys. I agree that they enhance the attachment to momma. My first didn't really have one, but she liked her binky for going to sleep and tolerating the car. She had an Elmo doll for a bit when she was a toddler that she particularly liked and he got more worn out than any other toy, but I wouldn't call him a lovey. Dd2, I noticed, seemed very tactile and didn't nurse to sleep or for comfort. She sometimes likes to be held and/or rocked when falling asleep, but other times she just wants her space, esp. if it's hot, and she would fiddle with something, usu. a burp rag while drifting off. I bought her one of those "L'il Clutch" blankets that Gerber makes. It's a foot square and has fleece on one side and a silky material on the other. She loves it! She pulls it over her face and fiddles with the edges while she goes to sleep. I like attachment parenting and all, but I am secretly relieved to have a baby that likes to put herself to sleep! Ssshhh, don't tell. . .
My main concern is that she gets so attached to it that at some point in the future we will have major difficulty if it gets left behind or gets packed in the wrong bag (i.e. *not* in the carry-on!). I really don't think that will happen, though, because she can also fall asleep without it, it just helps her settle faster. Plus, I bought a second one!
heh heh Seriously, though, I think it is like anything else, used judiciously, and not as substitute for mommy, they are okay.