Our ds is a wonderful, delightful, adorable little boy of 18 months. He's happy, sociable and well integrated. He goes to nursery 3 days a week, and spends time with mum, dad, and extended family on the other days. I'd love for him to have a brother or sister to grow up with. Someone to play with and learn with as a child, and an ally throughout life. I couldn't imagine life without my own sister, and it makes me sad to think he won't have that. My dp is dead set against any more kids. I think it's cruel to make our little one grow up without siblings. What do you think?