Brad Pitt put his health first for the sake of his family.

Are Brad Pitt & Angelina Jolie Going To Be Living Near George & Amal Clooney?

On Tuesday, My News 4 posted details from the actor who was a longtime smoker struggling to quit. He recently tried to give it up again and it's been pretty difficult.

"It (has been) deeply miserable," the actor told New York Post. "I really missed cigarettes. Withdrawal was so hard, I was ready to kill. (It was) against my nature, I invested time and sweat on it and didn't like it. My trainer warned every day would be unpleasant. He was right."

Brad Pitt & Angelina Jolie Spotted Holding Hands With Their Children

Pitt also admitted that he was a marijuana smoker, but gave that up when he became a father.

"I quit smoking (marijuana)," he said. "That (having kids) was the only thing that got me to quit. That was it. Done."

Pitt and his wife, Angelina Jolie, married in summer 2014. They are parents to six children: Maddox, 14, Pax, 11, Zahara, 10, Shiloh, 9, and twins, Knox and Vivienne, 7.

There was a previous rumor from Daily Mail saying that Pitt and Jolie were considering adopting a Syrian orphan boy after his mother was killed in a bombing incident and his father was taken away by soldiers. The boy apparently has two brothers and Jolie may have wanted all three of them.

"Angie wanted to adopt all three, but when she got back to the United States, and told Brad about it, he said no," a source told Radar Online.

The insider added that the couple "compromised at adopting one."