Hmm. No logic, no looking for something specific. My "collection" has been built opportunistically whenever I've discovered or stumbled on a frame that struck me as interesting. But that's not to say it has been random. Some bikes speak to me, some don't. "Fast" road bikes appeal. Used-to-be-high-end road bikes, especially European. Or iconic, like the Centurion, which is the furthest removed from what I might have started out looking for. I wasn't looking for the Gazelle, just browsing, but the idea of a great 531C frame appealed. I built the Grandis because I didn't have a true Italian bike actually made in Italy with Columbus tubing. The Raleigh came to me on its own, a nice upgrade to my original Peugeot. I built the Bianchi for fun hoping it would be different from the Raleigh. (It is.) The Motobecane was an ebay discovery and appealed because it promised to be a great speed-bike. (It is.) The Masi frame was given to me as an abused orphan.

No logic. Passion, interest.