Father LaMorte answers a question

Among the questions that have been submitted via the '?' cards available in the Chapel was:

"Is the mass an absolute requirement?”
The short answer: Yes.

And not only are we required to go, but it is considered a grave matter of sin if we do not go (and otherwise reasonably could have gone). This is a judgment that the person has to make.
From the beginning, the Church has always seen this as the primary (and bare minimum) fulfillment of the 3rd commandment: Keep holy the Sabbath day (the Christian Sabbath being The Lord’s Day). In the full Christian sense, “keeping the Sabbath holy” is to actually participate in the most fundamental of Christian celebrations - the mass.
Perhaps, the question might be raised as to whether the Resurrection would be considered important enough to warrant our not wanting to miss an opportunity to join in the communities celebration of it. This is the most deliberately specific thing that Jesus gave Christians to do after he left (“Do this in memory of me”).
And I contemplate that we truly, physically receive the body and blood of Christ - of God Himself - at every Mass. And I consider that communion with God is the ultimate goal of my life. Then I can’t wait to go. Attending mass is not just an obligation, it’s a privilege! It’s a gift.