Disagree, it is the most compelling American sport on a lot of levels - some people simply like the pure violence, but it also has the most diverse types of athlete (runners, throwers, catchers, kickers, blockers), the most diverse and interesting scoring plays, the largest rosters (so more personalities), the most types of scoring which then leads to most strategic decisions, most intense clock management, most debatable referee calls, most complex plays (22 individuals), a natural scarcity (only 17 games), possibility of the defense scoring on any play, and a few more reasons. Even college football is more popular than most professional sports. Football is a unique sport that actually is really, really interesting to watch.