We're expecting our 8th child, 5th boy, in a few months. I think you've got a good point about children's being spoiled, or at least, being awfully comfortable compared to the majority of earlier generations or other societies. It's not so much the number of children in the family that makes the difference, but the fact that it's more likely that a child in a large family is going to have to work harder and make do with less ... partly because there's more work to be done with more people, and partly because there's less money per person.
Wow! Eight kids. That's fantastic. My current wife wants to have at least three, perhaps four children in addition to the older three from my late wife, so that will give us around 6-7 children. I hope to end up with two girls and a whole bunch of boys!