What is the value of letting average users be light clients?

I'm trying to think from a use case perspective how the success of projects such as mustekala from metamask or other projects attempting to bring light client to average users will help evolve the ethereum ecosystem. What new capabilities and use cases will be enabled with simple enablement of light clients?

Submitted December 31, 2018 at 04:41PM }
via reddit http://bit.ly/2F0qVbZ