What is the big deal of having your baby in nursery from birth??

To
Women have done this for years. SIDS can happen anywhere! I've heard of it happening in shopping malls! Surely if im going into her constantly through the night for monitoring, comfort and feeding, she should be fine? 😐 we have monitors that track her movement, with sound and Video, White noise, doors will be open and she's right in the room beside us. Its not like im putting her in there and leaving her all night🙄