In my opinion, people who wrote frameworks didn't listen to the criticism. If writing your own framework means becoming a better programmer then go at it, but t

In my opinion, people who wrote frameworks didn't listen to the criticism. If writing your own framework means becoming a better programmer then go at it, but that likely will also mean maintaining it yourself. Whereas other frameworks are constantly being updated and improved. This is slightly different than writing your own language. Using Python and Django as an example, when python goes from Python 2.7 to Python 2.8, Django will have to update to be able to use 2.8.