Not including an ORM layer does not decrease "value" of this framework, because you can attach such lib on your own. In Go the you are very flexible to set up a "a place where data will be stored/queried" - there is fabulous database/sql (or additional layers like lib/pq [1]) which is great for many use cases; also orm-like solutions like gocraft/dbr [2]; oh, I also should mention Gorm [3] or Bolt [4]. Setting them up is really easy in any Go web frameworks because (almost) all database modules rely on abstraction from stdlib.

[1] https://github.com/lib/pq

[2] https://github.com/gocraft/dbr

[3] https://github.com/jinzhu/gorm

[4] https://github.com/boltdb/bolt