Before, a utopia was defined as an incredibly desirable society in which happiness constantly prevails. However, as we know from many stories, a world where one only knows joy is stagnant and undesirable. In order to feel great joy, we need to have felt great misery.
So in that case, is our world a utopia?
I can't find it, but b_b had a reference recently to the over-importance society places on "happiness" that I think would be appropriate here too. Perhaps it was in conversation with b_b. I see and talk to him enough that our digital interactions and IRL interactions are muddied.
I'd prefer to argue that, with your definition given here, utopia is impossible. Put mankind into a perfect world, where everything works smoothly, and we'll find something to complain about within the year. It's our nature to not be happy, to not be idle, and that's a good thing.
Interesting point raised. No, I don't think it's a utopia. I do think that there's place for great joy in our world, because the world we see on the news isn't all there is to it. I'd be blind to not see the great suffering, though, and so far as they exist, I'm not ready to qualify the world as utopian.