As millennials move to cities and have kids, will soccer become popular in the U.S.?

Follow the bouncing ball here:

• Americans don't really love soccer.

• Millennials are moving to cities in droves.

• That's changing the nature of cities and how they're designed/organized.

• MLS is the only sport where the largest percentage of its base is 18-to-34 year-olds.

• Young people seem to really like soccer in general.

• Many stadiums, though, are built in the…