Yeah, I think it's a mammal thing.
I've been wondering the same, though. Last time I didn't really face up to it, but deep down I was really uncomfortable and anxious about the doctor and being in the hospital. DH was too (probably even more so than me) but we never talked about it. So perhaps that was why even at 42 weeks we still weren't ready to go... But maybe not and I"m just being overly optimistic in hoping I might not still be pregnant come christmas

Some nurse Tegam