I'm fairly new to the world of Fountain Pens, as of July 2023, as it's been many years since I wrote with one at school.
I don't remember my experience to have been particularly pleasant - with ink cartridges and cheap school pens prone to leaking and making a mess - but modern pens have come a long way (even the budget ones), and resources such as this website are great researching (and testing) pens before shelling out hard-earned cash, and the samples for sale here are a cost-effective way to build your ink collection too.
I'm not an avid writer due to hand pain, but I've found that fountain pens make writing much easier because they glide over the paper with hardly any pressure, so writing has become a lot more enjoyable.