There's no real benefit NOW. In the original game, when every copper was hard-earned, begging had value for raising small amounts of coin.
NOW, it's for the obsessive completist who must max out every skill and complete every achievement.
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Sippin 115 DRU **** Firiona Vie ****Agnarr
FV: 115 WAR ENC CLE MAG WIZ SHD SHM Master Alchemist ROG Master Tinkerer & Poison-Maker
Master Artisan (300+) * Baker * Brewer * Fletcher * Jeweler * Potter * Researcher * Smith * Tailor
Agnarr: 65 DRU ENC SHD MAG CLE ROG WIZ BRD WAR