Why are all of Ron Howard's film boring?

And I've never seen any diversity in casting

The "beautiful mind" part was never really explored because this man is/was a mathematican and his formulas nobody in the audience would ever understand! So Ron Howard decides to put the focus of the story squarely on our protagonist and his mental demise and subsequent rise again. But it's just not that interesting. Sorry. I was bored by the time the credits came up. Russell Crowe is a fine actor but the story was limp and I was bored.