Trouble with enjoying this movie

Rating: 4/10 (20 May 2015)

I am not sure why this movie is rated so high. Maybe so many people have trouble to be objective because they love baseball and adore Clint Eastwood?
Anyway, I saw this movie in the plane and was not amused. The performance of Eastwood was fine, but the act of playing a grumpy, embittered man who opened up a little in the end was not any surprising; it was a type of character he played several times before.
Furthermore, I thought that the plot was pretty simplistic and predictable from the first few scenes. On top of that, I thought that the antagonistic part of Matthew Lillard was overdone, his role gave me the feeling that I was looking at a movie that targeted children.
Amy Adams was pretty charming in her role of Gus's (EastWood) daughter, but her romance with Johnny (Justin Timberlake) was played out in the same immature way. Their chemistry was superficial. Also, I am not a fan of Timberlake's acting - to be honest, I can't stand the guy.
I am not sure what audience group this movie is targeting, but I thought that it lacked (real) drama, realism, tension and exciting plot twits to appeal to an intelligent and mature audience.