I hate fountain pens with a burning, unbridled passion - from 6 to 17, they were the only acceptable writing implement at school, and I just remember endless blotting, leaks, ruined shirts, thefts, bent nibs (it was considered sport to grab someone’s pen and bang it hard into a desktop), and of course there was always some idiot blowing through theirs in the back of class, drizzling everyone with ink.
The moment I was finished it went in the bin, and ever since I’ve used disposable biros.
Fountain pens are an anachronism, kept about seemingly solely to torture children.