While George Lucas has been hands-off with the franchise since selling it to Disney back in 2012, fans have sort of wondered what the reasoning was behind handing over the franchise to Disney beyond the billions they gave him.
Author Paul Duncan has posted on Twitter an excerpt from his new book The Star Wars Archives Episodes I-III giving some insight, in the pages he asks George Lucas why he ultimately sold the rights to Disney and stepped away from making the Sequel Trilogy himself. Lucas’ answer seems to be more about having free time and not having to spend the next decade working on film trilogy.
DUNCAN: I wonder why you passed control of Lucasfilm to Disney in 2012?

LUCAS: “At that time I was starting the next trilogy; I talked to the actors and I was starting to gear up. I was also about to have a daughter with my wife. It takes 10 years to make a trilogy, Episodes I to III took from 1995 to 2005.”
“I was 69. So the question was am I going to keep doing this the rest of my life? Do I want to go through this again? Finally, I decided I’d rather raise my daughter and enjoy life for a while.”
“I’m one of those micromanager guys and I can’t help it. So I figured I would forgo that, enjoy what I had, and I was looking forward to raising my daughter. Also, I wanted to build a museum, which I’d always wanted to do, so I was thinking ‘if I don’t do this now, I’ll never get that done’.”
“I’ve spent my life creating Star Wars, 40 years, and giving it up was very, very painful. But it was the right thing to do. I thought I was going to have a little bit more to say about the next three because I’d already started them, but they decided they wanted to do something else. Things don’t always work out the way you want it. Life is like that.”
Lucas previously dished to Duncan about what some of his ideas for the new trilogy were that didn’t ultimately get used by Disney including the villains and how the Luke would started a new wave of Jedi with help from the survivors of Order 66.
SOURCE: STAR WARS ARCHIVES EPISODES I-III