Simple as that. I have more solid body electric basses then I need, or maybe even want. I got everything covered for my needs and then some, and even after that, I have a beater bass I keep under my bed with crap electronics, pickups, and jack and it needs a new finish desperately. I keep it around for the possibility that I'll want to upgrade it, but even then I would upgrade it to something else I don't need. Just the fact that I have it, makes me want to upgrade it. The only reason to maybe keep it is that I don't know how to solder and I really should know how for when I want to install new pick-ups, shield a bass, or repair a connection. And that would be the bass to hone my skills on. Other than that though, I don't have any use for it. Should every bassist have a beater? I feel like they should, but I have no idea why.