Once in a while I think about a story told by a friend who's from Minnesota (and never mind if he got the details exactly right):
Up there in Minnesota they have the Duluth, Missabe and Iron Range. The way it runs is that they load up the train with iron ore at the mine, and that's an interesting operation. Then they take the trainload of ore to the dock, where it's dumped into ships, and that's interesting too. But in between the train crawls for 8 hours across scenery that's no better than scrubland, and it's boring as hell. Now, if you could model the DM&IR at full scale, would you? No, of course not. You'd model the two ends and leave out the middle. And that's why model railroading is better than the real thing.
Not to mention the weather in Minnesota.