Killing off Adobe Flash

I can't open Messages. It used to work fine. A reboot may solve it. Nope. Tired of the Facebook slow dance and a wonky DSL, I deactivated Adobe Flash completely (a Firefox extension) and now Facebook loads right up, with less scrolling lag, fewer blue spinning balls and tractor gears with stalled pages and stuck screens. I get why Steve Jobs had a vendetta against Adobe Flash. Mildly annoying not to be able to watch videos on FB, but I can load Flash when needed, elsewhere.