Comment by bayindirh
> No, fountain pens have a "cool" factor and can be made for decorative stuff, but that's it.
I would not disagree more. A fountain pen writes with zero pressure. In contrast modern rollerballs and gel pens have a little spring to prevent contact leaking. Uni might have a patent on that. Famously Pilot's Hi-Techpoint pens doesn't have that and it stains the place where it touches.
A fountain pen can outlast any disposable pen, allows you to write 5x longer without any strain, promote better writing quality and writing habits, and lives with you and becomes tuned to your handwriting in a couple of months to a year.
Moreover, hand writing is better for your brain and concentration than typing on a glowing box which strains your eyes, hands and brain with constant distractions.
I agree with you - the low/no pressure that a fountain pen writes with is important. However, I will say that decent rollerballs (eg UniBall Vision) require only the weight of the pen itself, which means there is very little difference from fountain pens (but not none).