I just started exploring fountain pens (inspired by a previous HN posting), and the feature that appeals to me the most is the variety of ink colors available for fountain pens. Most ballpoint pens seem to have just a handful of ink colors, but it seems to be possible to get a lot more colors for fountain pens, and some of the colors are really exotic.
Also fountain pens draw really fast with almost no pressure and have such a consistent line. I've been making little musical drawings with them. https://tiktok.com/@whistlegraph
In case you missed it, there was a thread here yesterday about pen grip with a sub-discussion regarding left-handed writing and fountain pens: https://news.ycombinator.com/item?id=22287679
I must write in a completely unnatural way, then. My hand is always completely below the current line of text. Which hand is writing simply cannot affect whether my hand touches just-written ink.
Edit: Just wrote some test lines, forward and backward. My whole hand is multiple lines down in the notebook. Writing in a way so as to get my pen-hand on the same line I'm writing feels incredibly weird to me. I think it just goes to show that whatever you get used to feels natural.
I have taken time to adjust habits in day-to-day activities. Luck seems to apply only insofar as I do not am neurally and physically typical enough that I can adjust these habits.
If you don't like something, especially if it's your own behavior (and writing style is absolutely a behavior), it is likely within your power to change it. Maybe you would need help from a coach or perhaps pharmacological or therapeutic if there is some pathology.
For me, it is always a no-brainer to change things that annoy me.
Financially, you're probably better off with hundreds of cheap Bics, but fountain pen ink lasts a long time.