If you think the scenes with the Dursleys aren’t necessary for Harry Potter and the Deathly Hallows: Part I, then you probably haven’t read the books. If your soul longs for some genuine emotion — here they are, the most honest, human, and dramatic moments that, sadly, no one got to see on the big screen.
Because they were simply — cut out. And along with them, a piece of the film’s heart was lost.
Petunia With a Human Face
It turns out Aunt Petunia actually has feelings. Not the kind she showed Harry throughout his childhood, but real ones — sadness, regret, longing. In the deleted scene, she looks at the empty living room as if saying goodbye to the past.

And she says, "I lost a sister, too." Yes, it’s not canon. Yes, it’s not straight from the book. But it’s better than saying nothing at all. If only they had left that moment in the film, we would have seen that Petunia wasn’t just a nasty aunt — she was a person who once had a sister. And her death broke something inside her.
Dudley — Is That You?
And since we’re on a roll with the tearjerking moments, Dudley suddenly stops being the nasty bully. He extends his hand to Harry and says that Harry wasn’t a waste of space in their home. For a brute like Dudley, this is akin to a declaration of love, gratitude for saving him.
Honestly, at that moment you start suspecting that someone swapped the script. But then you remember: this scene was in the book. And it was powerful. Why they cut the scene where Dudley brings tears to the viewers’ eyes remains a mystery known only to the director.

Radios, Love, and Rabbits
In short, there are other little wonders in the deleted scenes: Mr. Weasley tinkering with radio transmitters to help wizards communicate without relying on the Ministry of Magic — a moment where his love for Muggle technology pays off.
Hungry Harry and Ron chase a rabbit around the forest in a magical version of 'Tom and Jerry,' and later, Ron and Hermione share a tender moment nearby. These scenes are charming but admittedly less critical to the plot.
He Who Must Not Be Named
And of course, classic unspoken plot points — like the Taboo on Voldemort’s name. It works throughout Britain and helps track down anyone who dares utter the Dark Lord’s name aloud. But how it works and why — not a word in the movie.

They could have left in the scene where Hermione almost slips up and Ron urgently reminds her about the Taboo. It would have made life easier for many viewers — at least those who don’t sleep with Deathly Hallows under their pillow.
Deleted scenes from the film are like the Room of Requirement: they can help you better understand the world of Harry Potter — if you happen to stumble upon them online and get stuck watching for half an hour.