It might not be paradise on earth, but it isn't hell either. We actually have great weather compared to most places, only it's unreliable. There are leaves on the trees for most of the year. We do have social problems, but we have freedom of speech and the political freedom to sort out our problems.
As Joe-the-Lion says, we have our history, and that is well worth holding on to. But let's not lose hope in the future either. For all our problems, we've come through tough times before, but we keep going.
If anything, our biggest threat today is from modern town planners and property developers, who seem determined to destroy any trace of heritage or history to make a fast buck. They succeed where fires, plagues, invaders and civil wars failed before.