Sort of. I started using FPs in primary school at around age 9 in 1997. I never used ballpoints, but I did switch to rollerballs in college because I always hated ballpoints. Mechanical engineering college - fountain pens were a no go. I did use fountain pens home to turn the scribbles from lectures to nicer and concise write ups at home for learning + it helped me solidify the lectures. I bought myself a "really nice" FP as a reward for finishing master's degree at age 24 - a Pelikan M200. I thought piston filler was the coolest thing I have ever seen in my life then, because all my life all I knew were fountain pens on cartridges - Pelikan royal blue 4001, of course. At the time, I thought the 150 or so € was an insane amount of money for a fountain pen.

Nowadays I can't stand either cartridges or the Pelikan 4001 royal blue ink. I don't think there's objectively anything wrong with either, I just used them exclusively for well over a decade and I'm still sick of them.