Google Fiber offers speeds up 1000 mbs (more the 100 times faster than average) so you don't have to wait on buffering and available bandwidth for things like streaming video, real time gaming and Internet TV. Google Fiber offers high-speed options that lower the cost Internet access to the areas they serve. In fact they have an "free" option that provides faster speeds than most cable connections.
The sooner Google Fiber expands the sooner there will be more universal broadband access available in rural areas.
Google Fiber has been ranked by multiple sites to be the fastest ISP out there. There are no cons that I can think of besides the fact that they would have to set up more wires. Which is only a temporary con. So Google Fiber expanding would be great for humans.
Everyone loves having options to choose from, and if Google Fiber expands this will only make people more happy and give us even better options to pick from. It would be a good idea for them to expand for themselves and for the customers. As long as the customers are buying it is worth it.
Goggle fiber should expand, that way people are given more options. Everyone likes having more options to choose from, and being able to compare prices and quality are always a good plus. If goggle fiber is capable of it and wants to, than yes it would be a good idea for them to expand.