Football is a culture because...

CULTURE is...

• Excellence of taste in the fine arts and humanities, also known as high culture
• An integrated pattern of human knowledge, belief, and behavior that depends upon the capacity for symbolic thought and social learning
• The set of shared attitudes, values, goals, and practices that characterizes an organization or group

:the above information is from wikipedia.com:

In my opinion, football is a culture because a group of people get together for football games (rituals) with the same goal and attitudes which is for their team to win the game. For instance, each football team has a different fight song and songs played during the game. Just like America has their national anthem, football teams have their own kind of national anthem per say. Their fans or players of the football team have a costume or outfit they should or normally would wear to this occasion. For these reasons, I think football is somewhat of a culture.