I want to keep myself from sounding illiterate when I ever need to use words, I'm already cursed with the frequent lack of charm or verbal wit - the least I could do is write like a decent human being.

Roleplay style of writing is a casual way of practicing that. I used to write very epic fight scenes in the arena because I had a knack for choreography but I soon found that to be incredibly shallow and childish, so I opted to write actual stories in forums while pursuing martial goals in real life.