Earlier quoted context omitted.
I think even if your handwriting is crap a fountain pen just looks better, or at least more auspicious. Horrible for lefties of course, but very nice to use if you're right-handed.
If you're left-handed, handwriting proceeds best by mirroring what the right hand would do (ie. write 'backwards'). It's far more natural. Alright, so others will need a mirror to read it - but that ought to be society's problem, not yours! ("Equal rights for the Sinisterous!") In a gradual shift toward ambidexterity, I've found that questioning society's insistence on 'right-ness' can be enlightening...
edit spellchecker : left handed scribes became left handed scones. The history of heavy baked goods in the development of human civilisation has been scandalously neglected by a blinkered academic community.