I always supported the idea that if you are going to do a world cup, then you do it in a nation filled with football history and culture. There is nothing else you need, it could be even a poor nation and they would still have everything you need.
Argentina is famously a poor nation, they had record breaking inflation after inflation and you could stay at a five star hotel literally for 10 bucks a day, that is the cheapness level and poverty level they have, and yet if you do a world cup there, between the amazing stadiums and the football culture and people who would love to watch it, you are going to end up with a lot of fans and a great world cup. Wealth doesn't equal a good world cup, love of football does equal it without a doubt though.
A country that has much love football, this love is not enough for the country to host world cup. For a country to host world cup their are many things that are required for a country to get opportunity of hosting world cup. Good facilities, security and other things , this must be available.
Love is not enough for a country to host the world cup we know Brazil is the country where most people love football and there are many players in that country, but if they want to host the World Cup, first they have to have enough financial potential for the tournament and they need to have enough sports facilities and hostels but I don't think if Brazel and Argentina got any of these.