DEAR AMY: My husband and I have a very sweet 8-year-old son. His dad and I adore him. We’re having a great time going through life together. Recently he has been emotional and sensitive. He has said several times that he doesn’t want to grow up. When I ask him why, he says he’ll miss all of the things we do together, like reading together before bed and cuddling with us, and doing “little boy things.” I don’t know if I should be concerned about this, or even how to respond. Any suggestions? – Concerned Mom DEAR CONCERNED: This is a fairly common phase for children at this age, especially for s…