What factors made you want a Jazz bass? Favourite artist plays one, love the looks, love the tone, etc...
I'm interested in what the appeal for you, personally, is. What inspired your "have to have one" moment? Trying to understand why others love them, but I just can't quite bring myself to, and what possible reason I could be missing...
Not trying to troll (and not looking for reasons to NOT like them, so please don't post those, let's try to keep this "positive"), just want to gain more perspective if I can, or if my tastes are simply not a good match to them.
So... Give me GAS for a Jazz (or let me live on in my ignorance if you so choose).
Here’s my TL;DR:
When I was MUCH younger, I basically traded basses as my bass heroes changed. The progression went something like Precision Bass (Larry Taylor), Ampeg Dan Armstrong (Geezer Butler (naively thought he played NIB on the DA)), Rickenbacker 4001 (Chris Squire), Alembic Series I (Stanley Clarke). By the time I got to the Alembic, for which I sold my car, I finally realized I was never going to play like Stanley Clarke. Took a while, and I certainly tried; LOL. I then kept the Alembic for a long time as my only bass.
But, while I had the Rick, I happened to check out a used Jazz Bass in the local shop. Never forgot it. Black with a mirror pickguard, and strung with Roto 66’s. That thing really spoke to me. Tons of growl, very resonant; and just a GREAT bass. Problem was that no bass hero was playing one, with the exception of Mel Schacher. So, I just passed on it.
But, that bass stayed with me in my mind. So, after a decade or so gigging with the Alembic, and having a straight job that paid a little more than just adequate, I found this ‘62 J in the local classified for $275.
I gigged that bass for another 5 or 6 years; and then became interested in the active versions after playing an early Sadowsky at Elderly Instruments.
Fast forward, and these two parts basses are now in my regular rotation; one a 4, the other a 5.
For my purposes, the Sadowsky preamp and Delano JMVC pickups produce pretty much any Fender bass tone I need, P or J. Very versatile. Both of my parts basses are light and resonant, and growl like that Black Jazz that stuck in my mind all those years ago. My ‘62 is doing just fine in its restored passive state, and gets out from time to time as well.
Why do I like Jazz Basses? Beats me. They just sound great.