I have at least half a dozen vintage machines in storage, but use only 2 machines -- my Bernina 1230 for sewing (so old it is practically a vintage machine too), and my Voyager 17 set up for frame quilting (a machine that is no longer made).
I used to have almost a dozen vintage machines in cabinets, when I was collecting vintage machines, but sold those off when I realized that all I did with them was dust them off periodically! The vintage machines I still have are all "portable". Will pass my white Featherweight on to my daughter eventually, along with the hand crank machine she preferred learning on. Have a small vintage Bernina I will keep as backup if my computerized Bernina ever fails. The others I will sell once we move to an area that has a population density that supports placing an ad in a local paper once in awhile.