I'm an only child in my family. It's quite lonely without any siblings.
I have two siblings. Are there any benefits to bring an only child?
Not really. Being an only child is actually relatively uncommon, historically. It's very boring.
It must be nice to have all your parents financial support at least. Not split between the others. 
True, but we don't get to have that sibling relationship. I think my parents did it because it's expensive to have kids.
Yeah it is a shame there are not systems around to support parents trying to afford to have a family. 
Yeah, it is sad. But it's better than living somewhere like China, where you're required by law to only have one child.