OnePeterFive has a good article that lists 10 reasons to go to the Latin Mass. Here is the first:
1. You will be formed in the same way that most of the Saints were formed.
If we take a conservative estimate and consider the Roman Mass to have been codified by the reign of Pope St. Gregory the Great (ca. 600) and to have lasted intact until 1970, we are talking about close to 1,400 years of the life of the Church—and that’s most of her history of saints. The prayers, readings, and chants that they heard and pondered will be the ones you hear and ponder.