Figure I'd add some perspective from an American point of view while realizing the rest of the world loves soccer AKA football.
In the US, we've managed to create and establish numerous very active type sports which involve grave physical danger such as football and ice hockey. For those that like less dangerous pursuits, there's baseball and basketball.
We have the space and finances to install a football/baseball field or basketball court in every town with a population over 2000. Ice hockey not so much but it's getting there slowly. Soccer is easy for everyone because all you need is a ball and a piece of ground. Everything else has pads, gear, bats, sticks, etc, etc.
Europeans and the rest of the world tend to go all nationalistic about things. National pride and all that. In the US, we would rather beat the crap out of the neighboring town rather than say Canadaor Mexico.
Most Americans watching a sport are accustomed to points being scored, MANY points. The more points the better, zero-zero ties just simply don't cut it. We have overtime, double overtime, triple overtime and sudden death overtime to eliminate ties. A game of soccer could take weeks to finish.
Soccer's one claim to fame in the US is to the so called soccer moms, also known as helicopter moms who don't want their little boys breaking their arm playing football or getting hit in the head with a baseball. It's viewed as "safe". But the kids grow up and once out of high school, there's just no where else to go.
It simply isn't catching on here and really isn't likely too either. Not so long as we have college and pro football, American style.