Because as the story unfolds we realize that Del Griffith (John Candy) does not have a happy life with a happy wife to go home to as she (Marie) passed away a year previously to the films setting. Neil (Steve Martin) on the other hand has a great life, great job, beautiful home and a lovely wife and family to go home to for thanksgiving. The movie is sadness under the umbrella of humor and although there are many laughs to be had we cannot help ourselves but to want to give Del a hug and have him over for Thanksgiving dinner.
But what happens after that?
Thank you. I did see that movie when it came out but couldn't remember the premise. Yeah, I got sad to by watching the video you posted. At the 30 second mark I had that "Ohhh I remember now" thought. AND, a few seconds before --->
What happens? I think Del, by being invited to Neil's home and seeing the family dynamic, realized ever since his wife's passing that he's forgotten the happiness he once had and was running from himself. He was welcomed into Neil's home and called a friend. Then witnessing the embrace by Neil and his wife he had total recall and a sense of purpose thus moving on and being a happier person.
*** Disclaimer ~ I don't know what the hell I'm talking about.
Dammit man! A movie that I never considered revisiting and was put out of mind for over 30 years is now on the list to watch again...very soon!