Why football(soccer) is so popular ??

Hey guys!
I'm going to write down about football and its sociological effect .

lets start with a question. What is football? or as Americans call it, Soccer.
I believe football is not only the most sensational sport , but also is one of the most wonderful phenomenons in the world. It was invented by the year 1869 , and has experienced the highest growing trend of public popularity so far. there is a question coming up; why? what is the reason of this social status??

what springs in my mind about this question is summarized in two words; simplicity and unpredictability!
Football is simple to play ,even a handmade ball and two pairs of bricks are all you need to enjoy! and it is unpredictable because unlike most of sport fields, the winner of the match is not always the stronger team necessarily!!

furthermore football has a profound effect on national integration , an issue which we face more in FIFA world cup competitions, The competitions which we are ahead of it and is going to be held in less than fifty days in Russia! Russia 2018 !!! Football national teams of countries - which have the wonderful opportunity to participate competitions like FIFA world cup - spread their people history and culture through world by means of football! and feel their people hearts with pure national pride! specially with last second goals!!!

Football is not just a sport!
let me know your opinions!

thank you!
Eric