I love this topic because it will show where everyone stands. I personally am rooting for the USA because I live in the USA and I am loyal to my country, especially when I am mostly just interested in winning for that reason alone and im not the biggest futbol fan. I did love playing recreationally. I also loved hearing my fellow coworker who is Haitian describing his unforgettable experience at a qualifier match. What he described was his whole country because the majority in the stands was Haitian in complete unity in joy! He described being in tears at the sight of his grandmother being the happiest he had ever seen her and was so filled with joy that he went. Can you describe anything more wholesome? It makes me want to bet on Haiti! I was personally proud to hear that the USA made their greatest performance in a long long time or maybe ever in a match at the very beginning.
This is the kind of bet that a few people makes, especially so far in advance, and why? I have a few reasons...
First because at the last Fifa's World Cup tournament, several teams that were considered "favorite" did not even make it past of first round, and in this edition I am seeing some European teams drawing with others that were previously considered "weak"... than I believe we will have some surprises in this championship again.
Second... because we usually root for our favorite teams, for our countries, and this is exactly what you did: The USA has never win this championship and probably would not win this year, but even so, you believe and bet in them.
I also believe and root for Brazil even knowing that they are going through a bad phase, but I would bet in them to be champion... however, I would not do that because I prefer just cheer.
I will wait for the championship to move towards the next phase to answer the OP's question.