In both Rails and Laravel, with a couple of commands you generate all the code to have the authentication system (frontend included), in Django you have to write it yourself (how many millions of times has this part been written? Does the world need you to do it again?).
Scaffolding: Both Laravel and Rails have tools to generate the code for a simple CRUD, Django does not.
For me it came down the simple fact that I prefer coding in Python over Ruby or PHP.