A minimal or even a zero growth economy and society can work pretty well. After all, one way and another, that is the kind of model we've generally had for most of the time humanity has been around.

It's got its problems, but nothing insuperable. And it is longterm viable, in a way that systems built round the expectation of sustained growth can never be. Here's a website with some interesting stuff about this kind of thing - Zero Growth Economy Conference.