Two more scenes keep returning to mind:

1. Possibly every parent of a gifted child has felt this way...
Frank said something like, "Can't I have some semblance of a normal life?" or "Can't I ever have some time to myself?"

Of course, it broke the kiddo's heart... and they talked about it later in a very healthy way.

That said, I really understood Frank's desire to have a bit of a break now and then.
2. Possibly every parent of a gifted child has felt this way, too...
Because this scene appeared as a clip in the trailer, I won't place my recap of it inside a spoiler alert:
Frank was asked what his greatest fear was. He said, "That I ruin Mary's life."
That sentiment seems to be echoed in many forum discussion threads about advocacy, acceleration, etc...