Firefox announced that all future updates will have Flash disabled by default. Facebook publicly calling for the death of Flash. MalwareBytes publicly calling Flash the most targetted app by exploit coders.
The writing is on the wall, Flash is dead, it just doesn't know it yet. If you're using Flash on your sites it's way beyond time to find an alternative. I've left Flash disabled in Firefox just to see who was still using it. Lots of sponsor programs still need to update their tours.
On the up side, many of those annoying embedded ads that autoplay, don't work now with Flash disabled.