Frameworks die. It is a fact. Death in this sense means discontinued support and development. It is not difficult to see how this can render any software that depends on a 'dead' framework unstable or even broken with time.

I have experienced exactly this multiple times. In fact, I am extremely aware of this when I start a new project. Perhaps especially when I am dealing with frameworks like Express, Django or Ruby on Rails.

If I recall correctly, Gary Bernhardt, said it well: "Treat Rails like a disease and isolate yourself." You can replace "Rails" with any popular framework. Yourself in this quote referes to the business logic of your system.