Durant was greeted with loud boos Friday night at Boston's TD Garden and was booed often when he touched the ball in the Warriors' 104-88 victory over the Celtics.
Although Durant, who considered joining the Celtics this past offseason, said he had "no hard feelings" toward Boston fans, Green defended his teammate.
"Fans must be desperate," Green said after the game. "Like, who boos a guy for taking an interview. That's crazy. Y'all booing somebody for interviewing with y'all?
"Man, they may scare free agents away. You don't want to take an interview and then make enemies for taking an interview. I don't know. They may want to be careful with that."
The Celtics signed Al Horford over the summer and courted Durant, too, even bringing along Patriots quarterback Tom Brady to meet with the free agent in the Hamptons.
But they were unable to land the former Oklahoma City star, and the Boston fans remembered.
"If you're that mad at what somebody else did with [their] life, you need to evaluate your own life," Green said. "[Durant] made a personal decision for his life, for his happiness, for his career. And if people [are] that mad, they need to re-evaluate where their head is at in life.
"I don't know if I can stay that mad at somebody for deciding to do something with their life. That's a slippery slope."
Durant was outstanding in Golden State's sixth straight victory Friday, scoring 23 points on 10-of-13 shooting with 10 rebounds and seven assists. The former league MVP did not seem irked by the boos from the crowd.
"They come to enjoy the show. There's no hard feelings," he said. "I've still got love for Boston. I still love playing here. You have one of the best crowds in the league. That's what they're supposed to do."
Warriors coach Steve Kerr had a different take on the crowd's reaction.
"It's just the beer talking," Kerr said.
ESPN's Chris Haynes and The Associated Press contributed to this report.