TOP O' THE MORNING TO YE!
Every genuine story, whether captions for scrapping, or bits of journaling, sounds better with authentic dialect in the dialogue. Too much can ruin the the mix, though, so be careful not to lay it on thick like some writers of the past. Twain's dialect came on so strong it's almost difficult to comprehend. Doing that today will lose you readers. No author wants to lose a reader, so use your dialect in dialogue in small amounts for greatest effect.
Happy St. Patrick's Day!