HollyDaze I think you've made a very good point. Most people (I include myself) don't have the skills to produce and repair the things they need - skills that in previous times were handed down through the generations.
Those in full time work also, as you say, don't have the time because they're either too busy thinking up products and services that don't address people's fundamental needs or they're too busy delivering them. Watching The Apprentice or Dragon's Den gives a good insight into a crazy world where people talk about "adding value", "branding", etc., etc. Even the young man whose forte was invention and who eventually won one of the series, produced the earth shattering invention of, I think, a curved nail file.
I think there is a need for a discussion about how our economic system works because it seems a nonsense to me. There were three economists on Newsnight the other night talking about whether it was desirable for interest rates to go up, to stay as they are, or to go down. It appeared that there is some mysterious, undefined and indefinable point where the interest rate is "just right" - neither too high nor too low. But none of the economists could agree what that point was.
It's slightly off the subject of population growth, but the way resources - and human beings' time, labour and commitment, are expended seems to me to be relevant to the question of whether the earth can properly provide for all of its people or just a few of them.