At night, there is less noise and people can sleep better. And if there is an accident at home, they know that the ambulance will be able to come quickly and won't have to stop to wait for a train to go by. Of course in daytime, many people are not at home because they have gone off to work.
There are also fewer train horns being sounded when the trains go by. No more horn noise. That's good and people have commented on it.
It would be nice if there were fewer trains going through at night. It's not easy to do that, but other methods could be considered. At peak hours, It might open up some areas of the municipalities, particularly in the morning or at dinner time, around five p.m.
And CN and CP are renting their tracks to passenger train companies. It's not always easy to manage both at the same time.