My approach is that anyone breaking into my home could do far more damage, and I'd have far more to worry about, than taking my passwords -- ultimately, nothing

My approach is that anyone breaking into my home could do far more damage, and I'd have far more to worry about, than taking my passwords -- ultimately, nothing I have electronically is valuable/secret enough that someone is going to specifically target me and break into my house to try and gain access. Having a paper copy of my master password isn't much of a liability in that threat model (and probably makes me more secure day-to-day - I can use a longer, more complex master password without the fear that I will forget it and lose access to everything).