Because he realized he had actually won. Luke and Leia had been reunited, and Artoo was still safe. They would escape aboard the Millennium Falcon and deliver the Death Star plans to the Rebels. And Luke would be on his way to becoming an active member of the Rebellion, and a powerful Jedi.
The seasoned Jedi tells Vader, "If you strike me down, I'll become more powerful than you can possibly imagine." As the story continues, it becomes apparent that Obi-Wan meant that his death would inspire Luke to topple the Sith, but to Vader, his words were perceived a lot differently.
Although not fully explained on screen, Obi-Wan was killed in the physical sense, but he merged with the Force as what is known as a Force Ghost. In essence, the living energy of a person continues to exist after the body is no more.
Because they made that movie four decades before she got to know him in the latest iteration of “The Lore Between the Lore" that Disney+ is selling us. The same reason she didn't show a big reaction when the her entire planet and all those she was responsible for died in an instant.
Many are often shocked to find that Obi-Wan was only 57 years old when he died fighting Darth Vader in A New Hope.
While it seemed like Anakin had lived a long life, his choices eventually led to his demise at 45. Though half of his life was filled with tragedy, he managed to make things right with the time he had and gained a Jedi burial that had him reunite with his old Master and Yoda.
Padmé was just a friend. It's only the way he talks about her around Leia that could make one wonder if he harbored feelings for the Queen and Senator from Naboo.
In Death Star, it seems the Sith Lord could have discovered Leia's true identity if he'd pursued his hunch. However, Leia's strong-mindedness during Vader's probe denied him the opportunity to discover she was his daughter.
Because the Sith focused on using the Force for their own gain, they could not truly become one with the Force. The Force was not meant to be bent to a power-hungry individual's will. When Darth Vader died, it was the redeemed Anakin Skywalker that became a Force ghost and not his dark side alter ego.
Obi-Wan Only Says He Never Owned R2
Note that he says nothing about not recognizing R2; his clever dodge gives the impression that they're strangers but doesn't actually deny knowing the little astromech. Thus, there really isn't a "contradiction" in the first place—Obi-Wan was just being his cunning self.
While Anakin Skywalker is ultimately reawakened by the love of his son, Darth Vader is relentless in the disdain and loathing he holds towards his enemies - none more than Obi-Wan, who struck him down on Mustafar, leading to Palpatine rebuilding him as his cyborg servant.
Obi-Wan apologizes for what he did to Anakin, but Vader assures him that he killed Anakin, not Obi-Wan. He then goes on to proclaim that he will destroy Obi-Wan in the same way.
She also knows Obi-Wan, and she knows him well. Her holographic plea for help, already iconic, will never be the same. She knows Obi-Wan's real name as well as his alias of “Ben.” When Luke comes barging into her cell and says, “I'm here with Ben Kenobi,” Leia jumps off the bunk in an instant.
However, when they next met in Star Wars: Episode II – Attack of the Clones, Anakin and Padmé's feelings for one another grew into something resembling love, and their wedding at the end of the film solidified their relationship as one of the most important romances in Star Wars history.
Every time she speaks, he remembers Padmé. Fighting alongside Sabé reminds him of fighting alongside his wife. While that is certainly painful enough, it's also reminds Vader of the man he used to be, a past he had long ago attempted to kill and bury. However, the memory of Padmé via Sabé won't let his past stay there.
Jedi Masters Obi-Wan Kenobi and Yoda watched Amidala's funeral from Senator Bail Organa's starship, the Sundered Heart. They didn't want to take the risk to come any closer and be found by the Empire, as they were certain that Emperor Palpatine's attention would be fixed on the funeral.
The added risk Darth Vader takes in allowing children to live in a situation where he could have killed them proves that he regrets killing Younglings and will avoid harming any more children for the rest of his days, though intense intimidation is a dark strategy to avoid repeating his Youngling massacre.
Did Darth Vader ever regret killing Obi-Wan Kenobi in Canon or EU? He does. Right at the end. With Luke crying over him and Vader sensing his anguish and pain he had inflicted on all those who had cared for him.
Darth Vader hated Obi-Wan Kenobi because he hated himself. This started when he thought that Kenobi was the one that poisoned Padmé into turning against Anakin when he turned to the dark side. But the truth was that Anakin was merely projecting his own self-hatred toward Obi-Wan.
Yoda claims to have been training Jedi for 800 years. The second time Yoda mentions his long life is in Return of the Jedi, when he tells Luke, “When you reach 900 years old, you will not look as good as you will.” If we take Yoda at his word, that means the Jedi Master died at the ripe old age of 900.
Padmé was born in 46 BBY (Before the Battle of Yavin) and Anakin's miraculous Force-created birth came in 41 BBY, so Padmé is five years older than him.
According to ancient sources, St. Luke was martyred at age 84 in the Greek city of Thebes.