I posted a similar question a while back. Curious to get the opinion of those around me.
Is there any real reason to buy a six-string bass? Or is it mostly going to collect dust?
Well...
I voted "Carrots/Don't know/Don't care", but you did ask - nicely- so, here goes.
1. Nothing I've ever played in the 50-some years I've been playing, has ever needed; would have sounded better; or would have been easier to play, if I'd used a 5-string bass; much less a 6-string one. So, I use a 4-stringer...
2. 5-string basses usually present one of 2 problems for me. Either the neck is too wide for my short, thick fingers to get around on; or, the strings are too close together for my short, thick fingers to fret correctly. A 6-string bass? Never picked up one that did not have
both problems. That's why I can't really play a guitar, either...
3. I'm irredeemably left handed; left handed 6-string basses are almost always not.
So, as for your 2nd question? It would not only "mostly" collect dust, it would do nothing
but collect dust -if I were stupid enough to buy one in the first place. Which I'm not...

And, as for the "true bassist needs an upright bass too" comment? I have arm/shoulder injuries that make it difficult/extremely painful to play one of those - even the electric "stick" ones. And while there are lefty "sticks" out there? Lefty acoustic uprights are
very scarce - and
very expensive when you find one. And, anyway; I have a couple of 4-string bass guitars that can fake an upright bass sound pretty darn well; including a custom built one, that was designed to do just that. Pretty easy to play, too...
