I've watched Messi playing at the field. You know anything about Messi? He is the best player? He is the FC Barcelnoa's ace? That is what everybody know. He was born at 1987 he was a good player when he was young. However, there was difficulty to him. He had problems in his bone and muscle. So when he was young his physeal plate was blocked. His family can't handle the money to surgery. Later FC Barcelona asked Messi to play for them as a boyhood player. But there was a deal with Barcelona and Messi. They asked Messi to play for there team for 5 years. And FC Barcelona helped Messi to grow and he grew up to168cm.
I think Messi is a very good player because his dribbles are very good. I am a FC Barcelona fan so I watch every single match. When Messi is sitting at the bench FC Barcelona's score pannel doesn't go up very well. However, when there is Messi playing on the field. The score pannel goes up in a fast speed like his dribble.  When he comes out he always puts one goal.
Second, I think messi is a good player because he is short however he puts more goals than anyone in Liga BBVA. Even tall and handsome Ronaldo can't follow him.  The team is loosing he sometimes  
put goals and even leads to victory. His called the best player in the world because he doesn't fight with the player or argue to the judge also he always practice hard to be the best player. Also he doesn't even argue to the coach when he is staying at the bench. That's what he is different with other star players.
I think the player that has technique and good attitude is really the worlds best player.