I was required to write with a fountain pen in elementary school, back when dinosaurs ruled the earth. My granddad's business used ball-point pens, and I got into trouble more than once for telling the teachers that they were backward and too cheap to let us have the good stuff.
Blots, smears, and little ink-stained wretched hands. Now that arthritis is freezing up my right hand, I find that a rollerball gives me more control over left-handed writing. I can make blots with a Bic, as well as the fountain pen. That's versatility!