They aren't gone. Not at all. I don't know about others, but I do that from time to time. Well, I guess not box stock with two cans of paint... but I certainly build low detail or simple models. I usually build them about halfway through a more complex one. Like the Hilux I built during my S2000 build. It's often nice to take a break from the hard work, and do something simple. And when a model drags on, I just gotta have that completed model satisfaction, so instead of rushing the good one, I put it on the shelf for a weekend and shake another box. and back at the dorms, I would do a couple simple ones a semester, just to burn off steam. Box stock days aren't dead. They're more like... weekends during our hectic model-building work week.