Kardashian told DeGeneres that the experience had profoundly changed her outlook and priorities.
"I was being flashy, I was definitely materialistic before," she said. Kardashian added that there's nothing wrong with being proud of hard-earned wealth or belongings, but "I just don't care about that stuff anymore."
"Really?" Ellen asked, as the studio audience offered a round of supportive applause.
"It's not worth it," Kardashian said. "I don't care to show off like the way that I used to ... it's just not who I am anymore."
She told DeGeneres that investigators have told her that the robbers had been following her for years, taking careful note of the jewelry she mentioned in interviews and on social media.
"I truly don't know if I'd ever wear real jewelry again," she said.
Kardashian had been staying at a luxurious mansion in Paris's 8th arrondissement, a discreet address favored by visiting celebrities. The thieves broke in around 2:30 a.m. and held the concierge at gunpoint, demanding that he take them to "the rapper's wife," Kardashian said. ("How dare they not know your name," Ellen quipped.) The handcuffed concierge let the assailants into Kardashian's apartment.
In that moment, Kardashian said, she was "100 percent" certain she was going to die.
"I said a prayer. I'm like - 'I know I'm going to heaven, I hope my kids are OK, my husband,'" she said, her voice breaking.
But in the end, she said she knows it could have been far worse.
"I don't want to sound like I'm not grateful," she said. "I'm out, I'm home, I'm safe. I'm such a better person. It's OK."