Three reasons you should not use Martini

Ironically, I have just written an article on how to handle page requests in go:

https://news.ycombinator.com/item?id=7771367

It's pretty simple and it doesn't really seem like you need Martini. When I originally looked at Martini I opted against using it because I wouldn't learn as much, so I don't really know how easy it is to use Martini.