Let me try to convince you then ;)
* Moon is first of all, blazing fast compared to the competition
* Moon has a built-in:
* templating engine
* component system
* directives
* There are lightweight packages for routing and SSR
* You can have single-file components (just like Vue)
* Moon does this all in about 6kb minified + gzipped
Glad you might try it out :D
I think you SHOULD care about the sizes of libraries these days. The extra weight can really slow down a page. That 6kb and 25kb difference results in a 21.8ms load time (for the 25kb library), and 8ms for Moon.
This increases with the amount of plugins you add. Moon-router is 1kb, Vue-router is bigger than Moon itself!