some people REALLY don't like this film, but...
Some reviewers on Netflix detest this film, finding the main character unlikeable and unsympathetic.
Even Pascal Greggory says on the commentary that he was surprised to be nominated for the César because of that and does not remember his character's name or seem to like his performance.
But I think there's more to it. The DVD commentators do speak a lot about Alain's being depressed and extremely narcissistic. I felt Alain was in a depressed period in his life, perhaps because the passing years are making him question his life, or perhaps for no particular reason. But I didn't think he was or would always be that way. During the film, like most depressed people, he is selfish, irritable, inner focused, and not a lot of fun to be with ~ but loveable even so. He shakes everyone up, and his depressed state seems to lead to some personal resolution (at least sort of), for him and for others as well.
Just one viewer's take...