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.
It's actually going to be four countries, not just one. Uruguay, Argentina, Chile, and Paraguay are bidding for the 2030 World Cup.
If they actually get it, it would be an awkward South American qualification. There are 10 teams, and from the next world cup there will be 6 directly qualified teams with one going to playoffs.
With 4 South American countries qualified as hosts, and 6 directly qualifying, that would mean the whole continent would qualify for that world cup, without a single qualifying match needed.
Even though I can see the advantage of hosting the World Cup in South America, because there are some good economies here and of course the big passion people feel for football. I would also like this event to be hosted in more exotic places in the future.
Perhaps, the organizations and sponsors do not feel the need of doing so, but I think it would be a good chance to promote this sport in countries where it does not have as much importance in South America.
It is just an idea, sure, but I still recall how people got very excited in Africa when the WC got there for the first time ever back in 2010.