Faster development, potentially less bugs, conventions, etc. All of that is highly dependent on what your projects needs but I can't imagine writing some of the

Faster development, potentially less bugs, conventions, etc. All of that is highly dependent on what your projects needs but I can't imagine writing some of the Ember apps I've worked on in just plain jQuery while maintaining a clean and readable code base. You eventually end up writing your own framework of sorts anyway when you take minimal path.