I could you tell some stories... There's several recorded deaths (the one I can recall without looking it up involved drowning trying to reach a lighthouse). Players play whilst driving regularly. Several local disagreements almost progressed to physical fights.
There's a global network of data-scrapers on both teams that log all player activity for strategic reasons. Or maybe "just because they can". That's timestamped location data for every interaction with the game. (as far as I know this isn't possible with Pokemon Go. Being aimed at kids it's much more locked down and safe-guarding aware)
On the plus side - many healthy friendships were formed and even a couple of long-term relationships. I still occasionally meet up with my old chums.