Funny this thread was bumped, I was just thinking about this while playing my 5 string today. First time I tried a 5 string was years ago, a Fender Jazz 5. Didn't like it at all no matter how hard I tried. Pretty much because of the wider width, that 1.87" at the nut just didn't like my smallish fingers. Just wrote them off basically. Fast forward to a few weeks ago when a thread popped up here asking if a 5 sting was a need. I said nope but members here brought up some good points that got me thinking. Then a few days later, friends I jam with wanted to cover a song in drop D and one in drop C. I play sub short scale basses (Fender P Junior). So I did the down tuning my E to D and then C# thing and it worked ok but it was hard to remember that the usual frets for my notes had all moved. I still think more about what fret I move to next rather than the actual note. So I started thinking I would try a 5 string again so I could keep my EADG tuning and just add in the lower notes I needed on the B string. Got an Ibanez Mikro 5 string for $199, no tax and free shipping. It only has a 1.77" width at the nut and that one inch less width compared to the Fender 5 I had played makes a massive difference. Much easier for me to play. Long story short, I love it and I haven't touched my Fender P since. Just has a great tone I love and its very versatile with the two pickups. Even when Im playing songs in standard tuning Im finding I like the B as a thumb rest and I REALLY like having the E string where it is on the 5 as opposed to the bottom string on the guitar. Easier for me to play it more aggressively and not worry about pushing it off the fretboard when I bend which would happen at times on my 4 string. I dont think I'll ever be without a 4 string, but I have certainly warmed up to the 5 very quickly and I dont see switching back anytime soon.
I think your story is far more common than people think. Just reading TB there are all these stories about people who try 5 and hate everything about it that is different from a 4. And unlike you they never give it a second chance. It takes some time to actually get used to new things which is why when I try something new I try to buy one to live with it for a while before I reject it.
The other thing is I used to play short scale and subshort scale a lot. But I found the B string on 5 versions to leave something to be desired unless you forked over some big bread. So I find it interesting that you have no complaints about the tone of the B string on your Mikro 5. And the price is right which means one can get one and live with it for a while to see if it works out. I may have to try this!