If it's not a multiplayer game then it shouldn't need to be online.
Like I play Hitman a lot and occasionally the game pauses because it loses connection to the server even though it's single-player. It's usually able to reconnect but its still a bit annoying. And I am playing with 500mb internet and an ethernet connection, so the issue is on their side.
So yeah, I really don't see why it's necessary or why it's become such a trend.