And we cannot even nuke ourselves to oblivion. It simply just won't happen unless we really really really work at it. Our civilisations maybe, but not everyone.
Also, just because today is good, doesn't mean tomorrow will be. You could be singing your favorite song rolling through an intersection on a beautiful day, plenty can still go wrong. Some caution didn't hurt anyone.
The panic isn’t unfounded. There is work being done every day that shows we our on our way to collapse. To think otherwise is equivalent to climate denial.