Storytelling is a muscle and just like any other muscle it must be worked. Breaking down other films is one of the cheapest and easiest ways to work that storytelling muscle.
If you’re new to filmmaking and screenwriting, you should breakdown as many movies as you can. Every film is a text book. Even the “bad” ones.
0:56 Easier to spot issues
1:20 Helps you breakdown good films
1:39 Lessons tend to stick
1:48 Spotting cliche dialogue
1:53 Help spot issues in fellow filmmakers work
2:13 Entertaining to watch
2:27 Reinforces screenwriting/storytelling guidelines
3:45 My experience