[thrillgore]

I'd say it a mix of confirmation bias and the number of high profile events with negative correlation that have occurred (that aren't celebrities/fame worthy individuals dying).

Personally its the number of outright confusing/heartbreaking global events such as Aleppo, Brexit, the Trump election/"presidency," that has made the year seem particularly unbearable. Losing Carrie Fisher, George Michael, David Bowie, Alan Rickman, among others just gives more reflection to how bad it's felt, not if its actually a bad year statistically.