Ok so let’s look then at what you are claiming.
You are saying then that Salvation is something we earn by doing X number of ‘good things’ and that if a person does a LOT of good things, then doing ‘one little UNREPENTED mortal sin’ (“Unrepented” is the key that you appear to have missed here), then the sheer volume of ‘good things’ should cancel out one ‘little’ UNREPENTED (I need to repeat it because people don’t seem to get the unrepented part) mortal sin.
That is what you’re saying.
That God should look at the whole person (as if He doesn’t) and that God should by hades show that person ‘mercy’ even if the person has UNREPENTED (once again, lest people still miss it) sin.
God says, “So, you sinned against me, knowing you did grave matter, fully knowing, and fully consenting, and you still aren’t sorry; the sin is UNREPENTED now and always. BUT, hey, you did so many ‘nice things’ outside of that. I’m going to MAKE YOU GO TO HEAVEN and submit to Me (because that’s part of what heaven is, submission to and union with God, and letting HIS will be done). Because if I don’t, internet posters will say I’m mean.”
What it boils down to is authority. Just because Sy Noe, or John Doe, or ANY person looks at 'missing Mass on Sunday knowing it was wrong, and NEVER being sorry" as being a RIDICULOUS idea to call this ‘mortal sin’. . .doesn’t change the fact that GOD determined it was.
Gee, if I really love a guy, and I plan to marry him, why NOT have sex? We’re fully consenting adults, right? How RIDICULOUS for God to say if I choose to do this, knowing the Church’s (God’s) teaching, and NEVER being sorry for it, that I will condemn myself to hell. When I do so many nice things for people.
I DESERVE HEAVEN. I DEMAND IT!