I am composing this question from the perspective of a modern American (which I am). I realize that the Catholic Church has never taught the likelyhood of ANY mortal sin, so my question asks ONLY for opinions.
I will present some Catholic doctrine, which I have separated by quotation for the benefit of informed Catholics who already know this stuff and can can skip this bit.
The Church teaches that we can sin by acts of commission (things we have done) or by sins of omission (things we ought to have done, but did not do).
Either type of sin may be venially sinful (which does not compromise the salvation imparted by our Christian Baptism), or mortally sinful (which removes us from a state of Grace, which is normally (and hopefully) restored by Sacramental Confession) - otherwise we are damned.
The Church teaches that culpability for mortal sin requires full satisfaction of each of three requirements:
[LIST]*]The sin must be “grave” in nature
*]The sinner must have full knowledge of the sinful nature of the act
*]The sinner must freely consent to the act[/LIST]
As a modern American Catholic, I can absolutely assure everyone that, within the limits of my knowledge, I have committed mortal sins of commission (thank God, literally, for Confession). But I have NEVER been aware of the possibility that I have committed a mortal sin of omission. I have never accused myself of any such sin, nor have I ever confessed it.
I’m having a hard time even imagining a scenario in which a modern American Catholic could even commit a mortal sin of omission. I can imagine very limited and crazy scenarios (ie, a child steps in front of a moving vehicle, and I could safely pull him back, but do not, because I WANT the child to die).
I think that most (or, really all) mortal sins are sins of commission, and not omission.
Can anyone come up with a plausible example otherwise?