We used to go to Cancun about every 18 months and stay for 7-10 days. We'd walk, at night, from the hotel to the downtown area for a night of drunk and debauchery with no worries of our security. Since they've started shooting up the restaurants and beaches we won't return to Cancun. I heard that some idiot set off an explosive device on the ferry to Cozumel recently so it may get to the point that I take Cozumel off the list as well. I'd love to visit the ABC islands but here lately I'm kinda liking the (relative) safety of the home court.
Good call.
https://www.wthr.com/article/14-killed-during-crime-spree-in-cancun