I guess that if you have a huge interest for something you can be satiesfied with a small shop as long as you can work on your car. Larger shop = more junk! At least here in Sweden.
I actually have plenty of room to work on the wagon, as evidenced by the driver’s side modifications. As I need a body part (doors, fenders, etc, I get them from my storage building and return them after fitting or working on them or whatever needed to be done with them. Some parts, like the motor and the rear end, I store in the area where the washer and dryer are, which is a separate area from where the car and work area is. I bet if I had a large shop, I’d probably have more stuff in it that I’d never use.