I went down the fountain pen rabbit hole a while back, at the same time I started improving my handwriting, especially cursive. It was a very nice combination of things. I was doing this with my daughter, often when she had to write her homework.
My improved handwriting has persisted (feels like I did a minor upgrade of myself) but I don’t write enough to actually continue to use fountain pens, because they’re most often dry when I want to use them. I never got expensive ones, but I did find some that I enjoyed a lot more than others. IIRC the Lamy Safari was one of my favorites.
Even though the obsession has worn off now, I still want to get a Kaweco Brass at some point.