James Surowiecki has an article in the MIT Technology Review Technology and Happiness
that looks at the the studies and writings on whether technology makes us happier. It's a mixed bag better to have it in many cases than not but perhaps it has little bearing on whether or not we are happy.
Another interesting article on the topic is in this month's Utne Reader Technoskeptic Techie in which Computer scientist David Levy thinks digital culture is damaging us at a deep level.