Yes, it kinda boils down to gut feeling. Also it depends what something is used for. A menu in a workplace or a game needs to be efficient due to its high usage. Thin scroll lists can be hell for players using a mouse on screen, while it may work ok on a tablet or phone. Then, scrolling is dependent on the number of items to scroll through. It works great for quick scrolls but if the list is long enough, it is no longer efficient. That which is not efficient will be skipped. So there is a scroll horizon at some point, past which few will thread.😄 Just my ramblings. Gut feeling works fine too.