The Seventh Chunk of Namesake

Summer has come once again for Gogol and this time he decides to spend two weeks with his girlfriend Maxine by the beach and spend his birthday there as well. Though before they leave to this all magnificent get away Gogol is asked to see his father off at the airport for he is on his way to leave for Cleaveland for almost a year and leaves the same day that he plans to leave for the beach. So more dutifully than willingly he goes to see his father for a while and off he goes on his adventure with his girlfriend Maxine. Little does he know that this would be the very last time he would ever see, hear, smell, or speak to his father. For later on that year his father perishes in Cleaveland. One day during the winter while still at Cleaveland Ashoke calls Ashima telling her that he's in the hospital because his stomache has been hurting, but he tells her not to worry because he believes it's just something that he ate, and then tells her that he'll call back later. Well the call never came and time has passed and Ashima decides to call the hospital sadly there they tell her that her husband is no longer with them but in another life for he had a suffered a heart attack in which nothing could have been done to save his life.
So after being in shock and crying she calls her children, Sonia right away form San Francisco leaves to where her mom is and Gogol leaves directly from LaGuardia to Cleavand to do all the necessary processes for his dad. He goes to the hospital and sees his dead dad on the bed to confirm that, that is his father, and makes all the necessary arrangements needed for him to be cremated and whatever else was needed.
Then he made his way to his father's rented car and drove to his apartment.

Question: Have you've ever lost anyone you knew? Do you regret not having been with them one last time if it was at one point possible?