I was the opposite....started off with fingers and then gave pick a try for learning songs by Tool and Silverchair.
Strings, EQ, technique are all things that can affect the overall tone, but I don't think there's a 100% substitute for either pick or fingers. I don't think anybody has unfixable "bad" sounding fingers (within reason), but you've been used to the sound and EQ needs of pick style, you just need some adjustment to get improved on fingerstyle.
Didn't GB play with fingers??
Snark aside, fingerstyle is a bit different than pop/slap, tapping, double-thumbing, or e-bowing....arguably more bass recordings overall featured players using Fingerstyle as opposed to picking (though some very famous ones like Carol Kaye's were done on pick). That to say it's not a fringe technique, so it's worthwhile to learn it. Doesn't mean you have to be as good or better than you are with a pick, but being about to do about 50%+ of your current song roster on both isn't a bad goal to shoot for