Thank you all for your answers. Firefox is very pushy about this update. The old browser has been hard to use without the update. I do not like that pushy approach, but I do not want to use IE and I am not really struck on Edge. So I will let the update install. The only add-ons I have is Webroot.
Brick walls do not a prison make, nor iron bars a cage. Give no thought of tomorrow, today was tomorrow and tomorrow will be today.