I have one particular FB friend who claims to be deeply saddened by seemingly every celebrity death. Who knows, maybe she really does have meaningful connections with the music of David Bowie and the Eagles, and the filmography of Alan Rickman, and it just so happens that they died all one after the other. Strikes me as trying to make it a little too much about YOU, but that's just my opinion. Those dudes all did notable work, and it's sort of sad that they died, but then, we all die. And while dying at 69 years old is less than ideal, I have a hard time calling that a "tragedy." It's a pretty decent run. Yes, the world could use more David Bowie rather than less, but his passing isn't going to put me in any kind of deep funk.
My theory of the current string of celebrity deaths: we've made a lot more people famous in the past 30, 40 years. Back when there were fewer choices in movies, TV, and music (and internet-celebrity didn't exist yet), there were fewer famous people, so it seemed farther between notable deaths. But now there are shit-tons of famous people, and they're getting older. Before long, someone you've heard of will kick the bucket just about every day.