I don't usually talk in specifics about my family, I think it is personal. I saw an acquaintance the other day at the store, she had her 2-month old daughter and I had my nearly 3-year-old daughter. She turns and said to me, "don't you wish yours was still this big?" I said, "NO!" She was shocked.
I wouldn't go back to having an infant for anything. I love my preschooler!! I love to talk to her and run with her and watch and listen as she experiences the world. Babies just don't do it for me! I am finally enjoying being a mother, and that is enough!