I'm not sure if this is such a good topic to bring up, but I'm going to do it anyway. I have a favourite child. (Gasp! I've said it.) I don't feel bad for admitting this, because I have my reasoning.
Growing up as an only child, my childhood was very lonely. I have, to this day, wished that I had a sister, or sisters. If my Mom was to bear / adopt a child right now, I would jump up and down for joy. When I was ready to have children of my own, I knew it had to be more than one, not wanting my child to go through what I did, playing board games by myself. So not fun. Since I didn't grow up with siblings, I have no idea what it's like to vie for my parent's attention, to feel being favoured, or less of a favourite. Hence my insensitivity for brining this up! But I've always wondered, the parents who say, "I don't have a favourite child," are they being completely honest?
Why I have a favourite child is because they are different people, they are at different stages in their development, and their needs are different, which leads me to having favourites, at different times. When Atlas was a newborn, Castle was my favourite, because Atlas was very difficult with feeding. We had a rocky relationship those couple of months. Try being projectile vomited on a few times and day, not my favourite. Yet, when Castle started testing the boundaries of authority, especially when he says everything in his whiny voice, Atlas quickly became my favourite. I don't think I will ever love one child more than the other. But I'm not sure how I can love on them equally every moment of the day, because there's only one of me and two of them. This Mommy thing only gets more and more dynamic and interesting. When they get older I'm sure things will be different, especially when their little personalities really come out.