I find myself building along multiple tracks: nice touring holiday bikes for mrs non-fixie and me, and period correct bikes for the both of us to participate in C&V events, such as L'Eroica and the Retroronde.

The "problem" I encounter is this: I also find that those tend to get mixed up: sometimes (or even often) the L'Eroica bike is actually a nicer ride than the comfort-before-anything bike.