Disney considered buying the social media company, calling it a "compelling" way to reach consumers. However, the deal never went through and Disney instead purchased a majority stake in sports streaming site BAMTech.
In Iger's new memoir, "The Ride of a Lifetime," Iger explains why he decided against the deal to buy Twitter.
"The troubles were greater than I wanted to take on, greater than I thought it was responsible for us to take on," he told the New York Times. "There were Disney brand issues, the whole impact of technology on society. The nastiness is extraordinary."
"I like looking at my Twitter newsfeed because I want to follow 15, 20 different subjects. Then you turn and look at your notifications and you're immediately saying, why am I doing this? Why do I endure this pain?" Iger said in the Times interview.
Disney was looking at several ways to open up its distribution business and connect directly to customers.
"Like a lot of these platforms, they have the ability to do a lot of good in our world. They also have an ability to do a lot of bad. I didn't want to take that on," he said.
Read the full New York Times interview with Iger.