I always thought so, but I'm starting to change my mind.
DD is 4 weeks today, and for the first 3 weeks, she happily settled herself to sleep in her crib. A week ago, she started to really fight her sleep, and so I comforted her to sleep just so that she could doze off and break the cycle of being over tired.
Now though, she won't go to sleep without being cuddled tightly, rocked, and bum patted simultaneously. DP currently has her over his shoulder after she has fought for the past 2 hours. She looks absolutely shattered. She cries, but stops the minute she is held, starts to fall asleep/does fall asleep, but then wakes up and cries again the minute she realizes she's no longer being held.
I just want to stress that I absolutely do not mind cuddling her to sleep if this is what I have to do - I know how natural it is for her to be close to me. I'm just wondering why she suddenly can't and doesn't seem to want to sleep without being held. Is she really too young to 'know' that fighting her sleep and crying will get her cuddled to sleep?