The reality TV star married Humphries in August 2011 in a televised California ceremony, but filed for divorce just 72 days later.
Speaking to The Guardian, Kardashian said that she could empathise with an 18-year-old cancer patient she met recently over how their experiences had taught them "a big lesson" about life.
Recalling the decision to broadcast her wedding with Humphries, the 31-year-old said: "We had done filming our season [of Keeping Up with the Kardashians] at that point, so we decided to film for the wedding. And that was a decision that he and I made together.
"But I think that, with any decisions in life, like, I spoke to a girl today who had cancer and we were talking about how this is such a hard thing for her, but it taught her a big lesson on who her friends are and so much about life. And I was like, that's how I feel."
> Kim Kardashian: 'I believe Kanye West relationship is permanent'
Kardashian also admitted that she probably would have divorced Humphries even sooner if there hadn't been cameras around her.
"Getting married and divorced quickly, if that was my goal the whole time - I'm not an idiot, I obviously know that that would be a bad business decision," she said.
"If anything, I probably would have left sooner had I not been filming, because I didn't want to end the relationship on TV."
Kardashian is now dating Kanye West and recently said that she believes their relationship is "permanent".