I don’t like the Novus Ordo but don’t have weekly access to the Old Mass. Is it a sin not to go every week?
Attending Mass is not all about us and what we like or dislike. It’s about what happened on Golgotha on Good Friday when God the Son shed his blood for us. It’s all about him! At Mass, it is his body and blood that is offered on the altar—regardless of what language is spoken, what rite is used, or what words are sung. Certainly, we all have our own tastes. But the light of his sacrifice must blind us to all else at such a moment.
To miss Sunday Mass through one’s own fault can indeed be a mortal sin. But to rank one’s preferred liturgical style higher than the Mass itself is to deliberately ignore God’s gesture of love as he hung for three hours, preferring our good to his life and all of his preferences.