I do not think that the world population is too high --- and I believe that it does not need to. Well, first, I like to say that I agree with you about your point when it comes to 'imbalance' of the world's population and its money and other resources. However, money isn't what only people need. Humans needs an environmental exploitation for us to get the majority of the resources that we need. If today we only have 7.6 billion people living on the Earth, and yet that number is already enough to greatly destroy our planet, then I think it is not a good idea to make those numbers larger. Moreover, although large population may also mean great productivity that can lead to an increase in economy, still, we will experience scarcity and shortage in the future if we do not sustain well our avaiable natural resources. Lastly, I think that the increase in population will also lead in increase also of misunderstanding and war.
We are obviously capable of destroying the earth, but I think we are also capable of restoring it. In most fields there is technology to make what we are doing sustainable. For example, if you cut down trees, plants new trees. Unfortunately, it seems to usually take some very bad things to make us realize that we should do something different. Sometimes it even goes too far and we have plants and animals going extinct.
Why do you think that the increase if population will lead to an increase in misunderstanding and war? Do you think we'll have new groups of people starting new wars?