I'm a combination of "only child" "ghost child" and "adopted child". Basically, my mom had a miscarriage, and then carried my brother to full term but he died during delivery....then they decided to adopt.
Needless to say, I was the center of attention of my parents and grandparents (I was the only grandchild in town) but I don't think I was spoiled as in I got everything I wanted...just spoiled with attention. I went through a phase in my teens and early 20's where I felt second best because everything I had when I was a baby originally was originally given to them for my brother (my parents were given 48 hours notice that a baby was ready for them). Although my parents never, ever implied that I was a replacement, that's how I took it for a few years. I eventually got over that. I think a lot of that just had to do with the natural separation from parents and getting my own life. But it still doesn't change the fact that if my brother had lived, they wouldn't have even thought about adopting me, much less been able to in 1970 through a state adoption because most people with a child already were denied. Ok, maybe I'm not completely over it, but I could be someone completely different right now if they hadn't lost their first child.