Here's one we're still trying to come to terms with. Mac Miller, who had openly struggled with addiction problems for his entire time in the spotlight, finally succumbed to an overdose in September this year. Miller was 26 years old. The unique and vibrant rapper was best known for tracks like "Self Care" and "Kool Aid And Frozen Pizza".
Miller always seemed to be on the cusp of overcoming his demons before being sucked back in to them, having bouts of sobriety in between encounters with the law. The tragedy of his death came hot off the heels of his abrupt breakup from Ariana Grande, and saw Grande take a beating online from trolls who blamed her for Miller's death. In the aftermath, Grande broke off her own engagement to Pete Davidson and stepped away from social media. The shockwave of Miller's death touched many lives and is a deeply sorrowful tragedy.