And one choice, out of many, is to be a "doorstop" collector. There are very few of us, and our models are very crude in comparison, but we are a happy bunch. I would post a photo of a "doorstop" for you, but with just a little work, you can see many doorstop models, including well done Walthers cars, on another 2-rail forum that actually accepts my Photobucket images.
I sometimes wonder about folks with perfect layouts and three rail track. They in turn wonder about my sanity, running sand- cast PAs and Mountains. All in good fun.