Perhaps the greatest fatherly love in the world is that no matter how unreliable a son is, a father still regards him as a treasure and loves him with all his might. It's like the father's line at the end of the film: "Actually you don't like Kyle, neither do I, but I love him, he's my son."
The first half of the film made me cry hard on weekend mornings, The second half made me laugh and cry, but at the end, it turned abruptly and turned into an Americanized mainstream ideology, which eclipsed the overall effect. Although the father's love finds a new sustenance and makes the film warm and tender, the reality, entanglement and pain created in the first half have also disappeared.
PS: Robin Williams is indeed a great actor.
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