Did anyone have the same reasons for disliking 5'ers and learn to love them? Is this something that you can get used to over time?
I used 5s off and on over the years because I was doing gigs playing zydeco and the current Louisiana players all uses 5s or 6s. Lots of songs in D makes the B string very useful. I had a Fender JDlx5, G&L L2500, Reverend Rumblefish 5 (one sale I've regretted), Carvin B5 fretless, a Guild Pilot 5 an AmStd P5 as the gigs came and went.
I didn't really get on with them in general because I was still playing 4s on all my other gigs. I should mention that after decades playing the DB, the bigger necks of 5s were never a problem, it was working out new fingerings.
What changed was I got an NS Radius CR5. I wanted one as my "last bass ever" but they were too pricey (over $3K) but one day a CR4 showed up on Craigslist for $1600 so I got that instead (and loved it). I really wanted the 5 so when one popped up locally for $1700 I checked it out. Very nice but I was concerned about laying out the cash and having trouble selling the 4 and how much did I really need a 5, so I passed. About two years later the exact same bass showed up again for sale by it's new owner. I contacted him and he told me he knew someone looking for a CR4, so we worked out a 3-way where I got cash for my CR4 and used that and $200 to buy the CR5.
Anyway, fast forward to where I was in a bicycle accident and had to stop playing for 5 months. To get my chops back up I started out just running scales and arpeggios for 30 minutes a day, then an hour a day, then 2 hours, etc. all on the CR5 because it is totally unforgiving of sloppy technique. When that was comfortable I started doing the same on DB. After two months of shedding on the CR5 and DB, when I finally picked up one of my P4s, it felt like I was racing a Ferrari, the neck was so slim
I still used a P-bass with flats for blues gigs but when I had sub jobs that could use the roundwound tone of the CR5, I'd bring that instead. Finally I got into a band that was moving from a blues repertoire into funk so I starting using it for that. I was playing it enough that I decided I needed a 5 string FSO with flats, too.
I had foolishly sold my AmStd P5 here about a year earlier but waited patiently until an AmStd J5 popped up here and got that. Luckily it already had TI flats on it, so I didn't even need to swap out the strings. So now I have those two 5s, one with rounds and one with flats.I still have a 4 string Steinberger L2 (rounds) and two vintage Ps (flats), those are not going anywhere because unlike that P5, they can't be easily replaced for the money I'd get for selling them.
One real advantage of the 5 over the 4 for me is after two more bicycle accidents (is someone upstairs telling me something?) it's far more comfortable for me to play up the neck on lower stings than near the nut on higher strings. A fringe benefit is I get a fatter sound up there, too.