has anyone noticed how pretty much all the characters are an only child?

well except for hansel and gretel, dr whale (before his brother died and is now a zombie), james (before his twin brother died) and granny (before her brothers died) so basically the ones who arent or werent, their siblings are all dead with the exception of hansel and gretel. lol anyways my point is that i've noticed that a large majority of the cast are implied to be an only child like regina, snow, emma, henry (both of them), belle, greg, archie, and rumple. i'm not ranting mind you just something i've noticed lol