“Because we can.”
While I–too–find the ultra-deep distressing of wood to be a bit extreme, I typically run a bit of 60 grit sandpaper over smooth surfaces that are supposed to represent wood just to take the sheen off more than anything else. When light hits a smooth surface, it reflects differently than it does if that surface is a bit rougher. While we can’t see the wood grain itself from 20’ away, we can see how the light reflects off of it. Therein lies the difference. I’ll also scuff things up if I’m mixing media such as styrene and wood. Since the wood has an inherent grain already, the styrene surface would stand out as notably different. This is fine if the styrene is supposed to represent metal, but if it’s to represent wood, it needs to be scuffed just a bit to better blend in.
Why? Well, Brian hit it pretty much on the head–pretty pictures. Those of us who go through such extreme lengths on our models fully expect them to be appreciated at the macro level, be it in photos or in person. It’s not necessarily to impress others, but for our own enjoyment. It’s much like any other art form. Others see my models on line or at open houses. Depending on how familiar they are with the hobby, maybe they’ll recognize the work that goes into them, maybe they won’t see them any differently from any other “toy train.” Sure, I enjoy hearing the compliments, especially from other modelers who appreciate the work. But I don’t build the models for the compliments, I build the models because it’s something I want to do, and I’m the one who looks at them most often. They’re built to suit my sense of aesthetics; nothing more, nothing less. Since my railroad is designed to be viewed through a camera viewfinder, how the light plays off of my models is of paramount importance. Surfaces need to have the right texture so the light does what it’s supposed to. Since my lens is typically maybe 12" - 24" away from the models, texture and light play really shows up.
Later,
K