>>What if I listen to all the things that I, a non-Catholic am doing wrong and still refuse to then become Catholic, believing it to be wrong-headed and depending too much on tradition and extra-biblical texts?<<
I would say that men can say whatever they want, but in the long run, none of us truly know the Mind of Our Lord.
It’s not up to me, is it?
see the above about protestants.
Is anyone going to hell because of the protestant heresy?