I like to watch American football, but my son really enjoys playing soccer.  He is a goal keeper.
He's not alone! Over 24.4 million people play soccer in the United States. 
The world cup this summer was great fun to watch!  I was rooting for Sweden, but France played well!
I'm sure the World Cup helped further popularize the sport in the US. I know a lot of people watched it. It's already the third most-played sport in the US, behind only basketball and baseball. 
It is frustrating that the US team didn't qualify for the cup this time.  The women are much more successful in international play!
I know, it's a bummer. But it's fun to see all the other countries. Soccer it played in over 200 countries -- it is the world's most popular sport. Maybe because it's pretty cheap to play. 
Yes!  Even on playgrounds at recess all around the world, all you need is a ball and some space.  But those who develop real skill are in a league of their own!
Yes, in theory it is a very simple game, but in reality there are many skills and tactics that are needed to play well.