I usually lose interest once a model is finished. I take it to a few shows in the area, and then it is retired to the display case. Occasionally I'll show them to visitors, and on occasion I give them away because they like it more than I do. there are some though that hold special meaning to me, like this one that I built for my wife, Bobbi...
This I'll never get rid of because I added things that represent her, such as the cancer ribbon plate on the front, and other details that remind me of her like a sonic drink cup in the cup holder.