Me! How else can you be sure you have the right bike for every occasion? I've got a Brompton for regular multi-mode commuting, a couple of Downtubes for throwing in the back of the car or the camper van, an old Raleigh tourer converted to Shimano Nexus 7, for riding when I want a capable bike that nobody will steal, a tandem for when the missus wants to ride with me, a vintage road bike and a single speed road bike for when I just want to be fast, an old Raleigh Roadster for when I want to swan sedately about the city not being in a hurry, need I go on? What one bike could practically fulfill all those needs.