economic growth is largely dead... a by product of the industrial revolution.
You average post-industrialized societies will not really experience any real economic growth.
Left or right... neither side wants to acknowledge that our dependency on economic growth is not desirable as a platform upon which to base society. If growth happens, wonderful... reap the rewards. If it does not, your society shoulQd handle it easily.
History is alot longer than the past 50 years... certainly much longer than the past 200-300 years of increasing industrialization.
Economic growth may be largely dead, but it is not entirely dead. There is still a long-term average of 1-5% that most industrialised nations can still realistically aim for. It is how to achieve this that most economists differ over, not whether it is necessary to aim for the growth or not. That is a separate argument entirely, and not one that I particularly subscribe to.
Despite all the problems that a mature, growing economy brings with it, a few facts cannot be denied. Each person has more access to goods and services than he could ever have had in centuries gone by. There are countless more mouths being fed, mostly comfortably, than ever before. Most developed economies are in a better position to look after the helpless, the poor, the elderly, the unemployed, the sick and the disabled, than they were in ages gone by. There is hope for most people to lead confortable lives, knowing exactly where the next meal will come from, and knowing that there is likely to be a roof over their heads: again, this is something that could not have always been guaranteed before. And if economic growth can lead to more of this, than I'm all for finding the right economic models to sustain that.
Granted, growth does not equate to happiness, or equality, or protection for our environment. But these are things we can work on also, within the system where there is drive for growth, and not necessarily in a mutually exclusive way. God didnt make a perfect world. Economics is just one tool that can help us muddle through as best as we can, and should therefore not be dismissed too lightly.