Just like there are "horses for courses," different bikes meet different (perceived) needs. If I am riding with both daughters, we are apt to take the triplet. If riding with the older daughter, perhaps the recumbent tandem, but if it is the younger (shorter) daughter, then the Bike Friday tandem. If I want to trail ride, then probably the Bike Friday Llama. For a long ride, it's the TiRush recumbent, but if it is just a fun hour or so, then probably the Catrike.
Our three-car garage in reality holds one car and nine bicycles....