That depends on what kind of network you are talking about.
In terms of internet, a smaller network is better, because that means more speed for the people that are doing the work.
In terms of survivability, a larger network is better, for there are more people to be able to obtain collections of necessaries and help them have a higher survival rates
These are just two examples, there are a lot more.
This points out that it depends on the context
hope this helps
