Dealing with more than 1 child/ loving the subsequent pregnancies-- ancedotal (since this is only my first pregnancy)
My sisters expressed worries about their second pregnancies because people seemed a little less interested, but I can say that the family does not love any one of the children less. We all have our 'favorite' 'cute' stories of one of the 6 nieces and nephews and I think we secretly identitify with one or another better. And as Mom said, the 1st pregnancy everyone always coo's and babbles and offers advice up the wazoo; the second, thrid, fourth, fifth (I have 4 sisters),etc. they think you're an old hat and know how to handle things and so just (typically) let you get on with it.
My oldest sister who has 4 kids under 5 (5yr girl, 3yr twin boys, and 2yr boy) says that each demands what time they, the kids, need from her and her husband and they adapt to the situations around them very well, often searching each other out for additional attention. At first she said she really tried to 'schedule' alone time with each, but it was not practical and some needed a little extra (one of the twin boys is a clinger) while others do not (the other twin gets huffy and frustrated if you try to help him with anything). She has figured out, through trial and error, what works in her family. (Which she informs me is the only way you CAN do it; she's always reminding me that everyone's life is different mostly because our priorites are different)
And as the father of the children says, what time you think you don't/won't have you often find because you change yourself, and adapt and you give what you can and need to give to each kid, because you cannot help but love each one as much as they love you.
She has used flylady to help her get some organization in her household schedule. She has her 'set' things to do (only a very small amount in some ways like A load of washing, opening mail,paying bills, put dishes in dishwasher) which HAVE to get done each day or they build up and the house starts falling a part. (One of the things she always does is one fun thing with the kids, whether taking them out to the garden to dig, taking them to the zoo, making pictures, or going to the library) Then she has her list of things she'd 'like' to accomplish, but those things can slide (like doing A piece of mending, washing kitchen floor, etc).
Their house is not super organised or clean ever, but everyone is happy and they live in relative harmony even with the boys hanging from the curtains
Hope that helps a little with some of people's fears.