> soccer/football is popular worldwide is because it's very cheap
Cheap, in terms of money. Expensive, in terms of time. Due to the lack of money to make time available, the poor often have no time for such diversions (even as children, since someone needs to pay the dues and take the child to practice/matches).
Also, if you're like most lower class Americans, you're likely selling your physical labor/wellbeing for a living, making more physical activity after work unappealing.
Cheap, in terms of money. Expensive, in terms of time. Due to the lack of money to make time available, the poor often have no time for such diversions (even as children, since someone needs to pay the dues and take the child to practice/matches).
Also, if you're like most lower class Americans, you're likely selling your physical labor/wellbeing for a living, making more physical activity after work unappealing.