I think kids are more involved in sports and music and gymnastics and
everything more to assuage their parent's guilt than anything else.
I think there are a variety of reasons there are more kids involved in
soccer than other sports. For one, you can field more kids in soccer
than basketball or baseball, and you can rotate them in and out faster.
The games are faster paced without regard to innings, so you can cram
more kids play time into one Saturday morning than an equivalent amount
of baseball games. There is less equipment needed to get a team
on the field than a football team. It isn't seen as 'urban' the
way street basketball tournaments are, and it is a non-contact sport
for all those moms out there who want to protect the kiddies from
injury.
Its an "ok" sport to watch if you personally have someone on the field
that you know, but otherwise it is boring as hell. I say to the
rest of the world, you like soccer only because you don't have American
football, and your pride wouldn't let you enjoy it otherwise,
anyway!