I have a small 4x12 layout in a spare bedroom. I started it 6 years ago. I can run 2 trains through mountains, along streams, through town, and next to a gold mine. It still isn't done. Most people would think it is, though.
My basement is huge. I could easily have built a "magazine quality" layout in the space I have. it would have required thousands of dollars, years of time, and a huge loss of living space.
From what I can tell of the "finished layout", now time to tear it down attitude, the layout was invading living space, and so large that it became an obsession to complete it, usually in a self imposed time frame and a desire to be published. There is absolutely nothing wrong with that. I've gotten to where I can almost tell what layouts are built for publication and which are built for personal enjoyment looking at the pictures of feature articles in the train magazines. Again, nothing wrong with that. Enjoy the hobby in whatever way you want to. It's all good.