McIlroy's comments come just a few days before the start of the Masters tournament in Augusta.
McIlroy revealed that when he was a kid, he would be raring to be on the golf course all the time. However, that is a much different story nowadays.
"I would be dishonest if I said my love of golf now is as big as it was back then," he told the Daily Telegraph. "I don't love golf as much as when it was just pure joy to get on to the course to play.
"When I was a kid, if I spent a day away from the game, I couldn't wait to get back. Now I can't wait for a week off.
"There's just not the 'I can't wait to get out of the house as quick as I can to get to the course' feeling.
"This is not a job. Let's face it, I've never done a day's work in my life. But it's an intense environment I play in and it's just nice to get away from it for a while."
Even though McIlroy has the chance to complete a career grand slam if he wins the Masters, the Ulsterman claimed that he will never be as good as 14-time major winner Tiger Woods.
"People tell me I am the new face of golf, but that is a hard one for me to fathom because, growing up, I never even thought about being that," he said. "Tiger Woods is the face of the game to the wider public and I don't think I'll ever be that, just because of who I am, who he is, what he represents and the people he brought to the sport.
"I'm never going to do that – it's not something that's going to be possible."