First of all lets make one think clear, this is a show in a sci-fi setting and Sci-fi has always been experimenting with cheesy and illogical concepts. I don't know why people forgot that. Of cource the idea of a endlessly running train isn't realistic nor would the class system of the train work in real life, but thats not the point of the show. You wouldn't say that fighting with laser swords or travelling through time in a car is very realistic, but it is definitely fun to watch. That is why (at least for me) Snowpiercer works. Is it a show that would win awards for groundbraking acting or writing? No, probably not. But the story is definitely thrilling, the set pieces are fascinating and I am extremely invested in the show.