If I had to keep just one of my many bass guitars it would be my Yamaha RBX 765A - picked up for £200 second hand, it had only been played for a couple of hours.
It's the one bass I can do pretty much everything on (except fretless mwah obviously)
It's not just in bands, we bass players are the best at other things too...
https://www.independent.com/2014/11/19/dating-musician-i-recommend-bass-players/
https://www.musik-steinbach.de/Gitarren-Baesse-Amps/Gitarren-Baesse-Amps-sale/Tenson-4-4-Elektro-Akustik-Bass-Jumbo-Solid-Top-in-natur-mit-massiver-Fichtendecke.html#.XWgivrfTW6M
One of these, if you can find one.