The Traditional Latin Mass (and I or many people who go to the Latin Mass could care less whether it was said in Latin or the Venacular) do so because it was the true Mass as said by our Lord and codified in the Council of Trent, and was not supposed to be touched by any man without incurring the wrath of St Paul and Peter themselves (read the Council of Trent Documents)
The Novus Ordo mass is a birth of Vatican II and Ecumenism , which I support reaching out to other faiths, but not at the expense of our faith and how we pray. 70% of the Old Mass was thrown out, with even the words of consecration changed, the priest is worshipping the people by facing them, instead of God and the tabernacle at the alter in performing the holy sacrifice are just a few of the changes, that many dont even realize took place. The Novus Ordo Mass was invented to please the Protestants, and what has it done? Mass attendance has gone from 70% before Vatican II to less than 15% in some instances, many believe it is due to the vagueness of the teaching and catechisms of Vatican II and the changing of the liturgy. I attended the Novus Ordo Mass for the first 36 years of my life, and for the past 3 have attended the Latin Mass, and the reverence is beautiful. I got tired of seeing kids in T-shirts and shorts getting our Lords body in their hands, and people laughing during mass, and no two churches had the Novus Ordo mass the same way. My entire family and friends have now started attending the Tridentine Mass and it is beautiful and will come back, or else the Church will have no one left except extreme liberals.