Is everyone in line for Holy Communion really in a state of grace?


 What percentage of all Catholics who present themselves for communion are, objectively, in a state of grave sin? And why isn’t the Church’s leadership talking about this enormous problem, which is surely much more massive numerically than the amount of divorced and remarried people receiving communion?

Stated otherwise, how many Catholics who receive communion are actively watching porn, practicing contraception, sleeping with and/or living with their boyfriends/girlfriends, having affairs, having abortions and living in a manner that is incompatible with the moral teachings of the Church

And why has so much attention been focused on the issue of divorced and remarried Catholics while the enormous elephant in the room — the fact that statistics demonstrate that most Catholics do not follow the Church’s moral teachings — has been largely ignored?  Furthermore, what’s at the root of this important problem?
I grew up Catholic in the 1960s and ’70s and was educated in Catholic schools from kindergarten through college.  Like so many others of my generation, I learned little to nothing about Catholic teaching and ultimately graduated college as an agnostic — which, in retrospect, was slang for “a practicing pagan.” I had adopted the beliefs and lifestyle of the prevailing culture, much like we are seeing in the lives of so many Catholics today.
Indeed, there was a serious problem with catechesis, a problem that has undergone a major course correction thanks to the pontificates of St. John Paul II and Pope Emeritus Benedict XVI.  But the deeper issue was not that I’d failed to learn the teachings and rules of the Catholic Church. The real problem was that I had not met Jesus Christ and had no relationship with him. Personally encountering Christ was and is the crux of the Christian faith,

(...) Many evangelical churches are filled with ex-Catholics who will tell you they left the Catholic faith because they got “religion without relationship” — in other words, because they never came to an intimate, personal relationship with God as Catholics. This is nothing short of tragic.
I received a call not long ago from the head of the theology department at the Catholic college where I taught moral theology for seven years. “I asked some of the students which course they took at this school that changed their lives,” he shared.  “A number of them said yours.” The reason? I introduced my students to the God of Jesus Christ; the God who loves us personally and passionately, the God reaches out to us with his great mercy, the God wants to have an intimate love relationship with each of us — the Lord who wishes to transform our very hearts and lives with his infinite, inestimable power.
In teaching the students about the moral lifeI conveyed the message of St. John Paul II:
Following Christ is thus the essential and primordial foundation of Christian morality … this is not a matter only of disposing oneself to hear a teaching and obediently accepting a commandment.  More radically, it involves holding fast to the very person of Jesus, partaking of his life and his destiny, sharing in his free and loving obedience to the will of the Father.—Pope John Paul II, Veritatis Splendor, par. 19.

Holding fast to the very person of Jesus.  This is the essence of the Christian faith, the foundational truth that must be communicated to Catholics today if we are to see the Church healed of the many moral issues it faces—only one of which is divorced and remarried Catholics receiving Communion.