web - Beginner MEANjs Application - Using Yo Scaffold VS creating from scratch -

i'm new building web applications using mean stack. being said, started building applications using ruby on rails.

i've noticed many similarities, many differences using meanjs.

obviously when using rails framework, use cli command - rails new (app). builds whole app skeleton.

now when creating applications using meanjs, i've seen many tutorials build files scratch, use yomen generator scaffold whole skeleton applications (like "rails new (app)").

the problem i'm confused there many more files included when using yomen compared "rails new".

simply asked, should creating single files build mean applications? or should scaffolding (since i'm familiar scaffold-ed applications)?

what big differences in creating application scratch rather 'yo meanjs'?

thanks

in experience build scratch. if need kickstart project use yeomen. yo creates basic modules server , client side , gives platform start with. yo gives commands create crud modules angular controllers also.i prefer build scratch.