If people can have that many children, and are able to support them all fairly and enable them to get a decent education etc etc then it's up to them.

Personally, if I ever start my own family I don't know if I want a lot of kids. Up until recently, I was completely against the idea of children but I guess as one grows older things change. Although I only plan to have a couple, because I want each to have their own room, go to good schools, go to sports clubs or art centres and have hobbies/friends outside of school.

I also think it's important that young children get undivided attention from parents when they're very young so I would want there to be a gap several years at least between each child (if we end up having more than one).