Simply said, no. Forex doesnt contribute anything to the world.
You can make money trading forex like people here do but the effect on the world or economics is not existant. People love to mix forex and stock exchanges together but they both have been created for different reasons.
Stocks: created to allocate money (fundings) in order to create possibility to fund people with great ideas and give them the opportonuty ti create value to the soviety (opening companies, starting new ideas, creating jobs etc.) <- this is why the netherlands invented the stock exchange. A fu ctioning stock exchange is a fantastic tool to keep your economy running great and give opportunity to people who are not rich by birth. it keeps creating companies, it keeps creating jobs. No country in this world what has no fnctionin stock exchange (reorder of wealth and possibilites) has ever been a rich country.
Forex:
Created only for the reason to maintain control over free floating currencies and manage differences in international trades by giving the opportunity to secure yourself against fluctuations in differences of two currencies compared to each other. As i once explained somewhere in a longer read, immagine you sell10 airplanes for 1 billion to china. you make a deal right now with fixed sums of €, the planes delivery and payment due is in 2 years. now if the euro gains in value within these 2 years of 10% all your profit margin in producing these airplanes is wiped out as you get less euros for the same amount of rimimbi. Yousecure yourself on the FOREX by entering contracts that cost you 0.01% of the trades volume but insures you that you will be paid exactly the amount you signed the contract for.
Soin basic translation: stocks are created to create wealth and give possibilitie to people with ideas, someone has a great idea, i buy his stock and invest in his idea. The best example of this is the East India Trading company, a company which grew with the help of its share holders (stock holders) to a company which was more powerful then most countries in the times of its existence in europe.
While i speculate on stocks i help companies grow, create jobs, keep world control for my coutry.
While i speculate on forex i do nothing but speculate for myself, it has absolutely no effect for the mankind.
Immagine we stop FOREX, and reintroduce fixed exchange rates as they were years ago. the economy wouldnt stop running, ev erything would be the same, the need for insurance contracts as described above would diminish and the worlds economy would probably even run more efficient. nothing changes.
If we closedown the concept of stocks we would never seen applegrowing to the most valued company in the world, microsoft woudnt exist, facebook aswell, railroad companies never could have gained enough money to control half of north amerca by their transportation etc etc etc. with apple, microsoft and facebook and coompanies of that kind, USA is colonizing other countries. In europe, japan and other parts of the world you dont really have any alternative to facebook apple or microsoft. Why? because the amercans have the stock exchanges which pumps incredible sums of money into very talented people and gives them the edge and the possibility to create something fast enough that the competition from china or japan or europe cant follow fast enough.
the foreign exhange basicly is only created to keep control over free floating currencies. But in firstplace, the concept of free floating currencies is very young and a lot debated and declared as nonsense by most of the nobel prize winning economist in the world. so forex is created to keep control over something that basicly isnt needed on the world.
If we ever introduce a world wide currency that not every single state is allowed to have his own currency then the forex will stop existing and the world economics wont change at all.
If we stop the stock exchange concept our economy will grow to a old men economy, where only people who already have a lot of money are able to create something (as it used to be in the victorian united kingom, before the concept of stock exchange was introduced only lords and people had a title from the monarchy were able to move anything in the country, people with no title were deemed to be workers only)