This Presbyterian Democrat also belives in keeping BC/AD. Simply changing the names of periods of time does not change them or reduce their impact on the present. Plus it's too confusing. During a wave of anti-clericalism in the French Revolution, the government got rid of the whole system and invented new months: Vendémiaire, Brumaire, Frimaire, Nivôse, Pluviôse, Ventôse, Germinal, Floréal, Prairial, Messidor, Thermidor, and Fructidor. (The humorous translations of the month's names are, respectively: vintage, mist, frost, snow, rain, wind, seed, blossom, meadow, harvest, heat, and fruits.) They also started a new year system, with 1792 (the year the republic had been declared) being Year I, 1793 being Year II, and so on. The calendar was unpopular and Napoleon got rid of it in the Year XII (1804).
Just in case you were wondering, today's date accoding to the Revolutionary Calendar is 12 Thermidor, Year CCX.