I'm not an only chid but my daughter is. It is a very different expereince from not having siblings.
Yes, very few people grow up without a sibling, either biological or adopted
I think being an only child can have pros and cons. You get the full attention of your parents, for example. 
I am kind of an only child however, the true defination says someone who has never had a sibling, I have one but we were seperated when we were 6 
Yes, you must definitely feel like an only child. Did you get to reconnect later in life?
we do not really speak, my understanding is that being an only child throughout history is pretty uncommon, except for in china I guess
I guess that's true, due to China's strict one child policy. Has that changed in the past few years, or is that poicy still in place?
to the country.
From 1979 to 2015, the one-child policy in the People's Republic of China restricted most parents to having only one child, although it was subject to local relaxations and individual circumstances (for instance when twins were conceived).
Families may have an only child for a variety of reasons, including: personal preference, family planning, financial and emotional or physical health issues, desire to travel, stress in the family, educational advantages, late marriage, stability, focus, time constraints
at the end of the day, it's a drama and it's not real. I think it got blown out of all proportion. Unfortunately, things like that do happen in real life. Babies get swapped and snatched in hospitals. I'm sure that any parent who has lost a child will find even talking about their experience very difficult, let alone watching it being acted out on television. Even my daughter got upset but she is only 9 so maybe I shouldn't have let her watch it. I just