I have three sons. I don't see the problem with choosing to have a daughter next. Or vice versa. It's OK by me if it's for family balancing.
Yes, but it won't stop there. First, it's gender. Then hair and eye color....then what? Custom made babies just sounds like a sick idea to me. I have three boys also and I'm so thankful for what God blessed me with. I would have loved to have a girl but don't feel an obsessive need to have one. My family is complete with my beautiful boys!