Despite being in the music business for more than 30 years, Metallica's Kirk Hammett has no intention of slowing down. In a new interview, he says that he can envision himself still rocking 20 years from now, as the Rolling Stones are doing.

"The word 'retirement' doesn’t really sit well with me," he told Loudwire. "There comes a time when you reach a position in society or culture where people will not let you retire. You can say, 'Alright, I’m going to hang up my guitar,' but people will still not let you retire. They’ll constantly remind you of who you are and what you’ve done, so you might as well keep on doing it."

Hammett, who claims to have written more than 400 new riffs for Metallica's next album, has put out a new book, 'Too Much Horror Business,' which goes inside his personal collection of memorabilia from classic horror movies. He says the appeal of the genre is simple: they're fun.

"It’s not unlike a roller coaster ride, you know?" he continued. "A good horror movie should have peaks and valleys, a good horror movie should move you emotionally, a good horror movie should be exciting to watch and energizing in a weird kind of way. Those are all sensations that everyone loves, or I would think everyone loves. Horror movies deliver that. I’ve always been attracted to the darker things in life. I was never one to go for light, airy stuff, even as a child. My whole aesthetic has always been one of the darker side. That rings true also in my tastes in music. It’s just always something I've gravitated to naturally."

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