I think I need somebody to explain mortal sin to me. According to the Baltimore Catechism:
To make a sin mortal three things are necessary: a grievous matter, sufficient reflection, and full consent of the will.
With a definition like that, it seems almost impossible to commit a mortal sin. Who would sufficiently reflect upon doing something wrong, say "Well, whatever", and then do it anyway with the full consent of their will? I could see a murderer reflecting upon killing their future victim and then going through with it anyway, but disobeying your parents, purposely missing Mass on Sunday, viewing pornography, and other grievous matters? Who would sufficiently reflect upon those things and then do them anyway with the full consent of their will? It's not like I would ever wake up one Sunday morning, not feel like getting out of bed, and then I'd lay there and sufficiently reflect upon my actions and then I would choose to spite God anyway in not going. It would moreso be like "I'm so tired, forget it," and then I would roll over and go back to sleep. Would that be a mortal sin? It seems like it, since it's pretty much the same thing, but according to the Catechism, it wouldn't be because I didn't sufficiently reflect upon my sin or do it with the full consent of my will (I was sleepy).
Is my understanding of mortal sin wrong? It all sounds very wrong to me.