Also, there's the perennial example of Burning Man (and related festivals) - here's an example of people creating happiness that has little to do with the removal of scarcities, and plenty to do with the addition of abundance.
To go off @mactintyre's selection: if "nearly all creators of Utopia have resembled the man who has toothache, and therefore thinks happiness consists in not having toothache. They wanted to produce a perfect society by an endless continuation of something that had only been valuable because it was temporary", well, seems to me that's a failure of imagination and experience more than an incapacity in humans or reality.
You could also look to Asimov's "Profession" (http://www.inf.ufpr.br/renato/profession.html) - again, while not exactly a Utopia, it's decently close - and more importantly:
"It won’t do to say to a man, ‘You can create. Do so.’ It is much safer to wait for a man to say, ‘I can create, and I will do so whether you wish it or not.’"
These are the people that, when all scarcity has been eliminated, take that bland contentedness which results and turn into something more.
Not to say the Orwell is wrong - he's on the nose: "Happiness hitherto has been a by-product, and for all we know it may always remain so. The real objective of Socialism is human brotherhood."