It's nice to get started on a project quickly, but often that quick start is purchased at the cost of a system that is tied together in such a way that it's very difficult to change. Human beings naturally prioritize short term benefits over long term benefits. But developers have a responsibility to their employers / clients not to pick something that makes the dev's life easier in the short term by significantly raising the cost of adapting to changing requirements in the long run.
My life has been a lot simpler since I've moved away from Django to Clojure. It's less evident in weekend projects or in the first few months of a project. But I never find myself saying to a client request "unfortunately, the way Django works, it's hard to [retroactively produce reports/get the state of the application at previous point in time/fix application logic then correct a corrupted table/upgrade just by bumping version numbers/use multiple databases/not systematically overwrite data/etc]."