Despite my shocking handwriting (even in block capitals) I recently started using a fountain pen again. I find it very therapeutic and much nicer to write with than a ballpoint or gel pen.
I got one of the TWSBI Ecos which seemed nice and don’t use cartridges (less plastic waster, hurray) and can use it as an excuse to buy some outrageous coloured ink, which dries pretty fast (non-glittery ink is even faster). Can’t speak for lefties, but it’s a million miles away from the pens I used at school which were generally messy even for me as a right hander.
The Lamy Safaris are highly rated and you can get a converter to use bottled ink rather than cartridges too.