I am starting planning my 10th layout (I stopped counting, actually). I have been thinking about previous layouts, and problems I've had. The main problems have been derailments, switch problems, and dirty track. So I'm thinking of going with mostly single track & less switching. It will be more than just a loop, but at the same time, I don't expect an operating night with a dozen modelers, either. So do you guys who have these elaborate mazes of three track mains, and switching puzzles every regret your decisions, or is cleaning and maintance just a necessary evil that you don't mind?