Agreed - the world have never been better from a human point of view... I think we are on the doorstep of a new "renaissance", where we cast away some of those fears, ideologies (both political and religious), systems, illness etc. which have plagued and trapped humankind for hundreds of years (if not thousands). Technology will be that force, which will make it happen - and I´m sure in hundreds of years from now people will look back at this time as the beginning of a new era rather than the end.
Doomsayers have always been here and will continue their negative spread, however fact is that not a single doomsayer have ever been right ;-)))...
There are big problems in the horisont, however I fear not if we will solve them, only *how* we will solve them... but no matter what, then the end result will be that humankind will be better of tomorrow, than yesterday.
Here is my 10+ to the world