It also takes somethings that would suck to learn the ruby version of, the php version of, the node version of, the python version of, etc., and does it faster,

It also takes somethings that would suck to learn the ruby version of, the php version of, the node version of, the python version of, etc., and does it faster, and allows you to isolate it from your application's complexity and business logic cleanly. Those things are serving static assests, SSL, and backend spliting. I cringe everytime I see a tutorial loading up the framework in a slow language like node or php to pass a static asset without the use of something like Apache or nginx.