Perhaps we should refer to 'family farms' rather than smallholders. I too was thinking that smallholders here in Britain probably don't contribute much foodwise outside their own families. However, small farmers and market gardeners do, both in Britain and the rest of the world.
The exponential increase in the world's population must surely worry you a bit Castle Farm. There are already countries in the world where there is not enough food for everyone, or if food is available then it is hung onto by those with the power - but I don't want to get into that discussion. It's obvious that political change is essential to achieve a worthwhile, realistic plan of action.
As the population balloons and sea level rises, good land will be lived on, so where will we grow our crops? Big business giant farms need flat and very fertile land to be able to produce their high yield crops - just the land which will be taken by the sea, or lived on by all those people. It is the smaller scale farmers who will have the skill to produce food from the second rate land, unsuitable for giant machinery no matter how many chemicals they pour on.
<<<the same with any animal you have an excess of food and they will breed more>>>.
So what do you advocate? That people should have their 'breeding' rate reduced by starvation and poor health? Observation shows that those who are struggling most seem to feel the need to have an excess of children, as they expect to lose a high proportion of them.
People in good health, with a good quality, varied diet, will have an interest in the world above where their next meal comes from, and will see for themselves and through education that restricting the number of children they have will be for their own benefit, as well as for the earth's.
But that is a slow way to proceed. What is needed is something we can do now to halt the decline. We have already taken more than a generation and really achieved not a lot.