This point below might explain the gap of understanding that we have. 

My view is that each Christian should feel greater responsibility for the state of the soul of every person in the world, than most people do.  (and there should be no "zero sum" view of responsibility.  No lessening.

There is a secular view hat exists today that tries to assign and overly narrow responsibility....or to blame even more abstractly.

In some fashion or other, how you live your faith affects my ability to live my faith.  And vice versa, of course.

Grace and prayer operate on the supernatural plane...and if we see things with mere human eyes..we tend to "shrink" responsibility.

God grants and distributes graces as He chooses.  This understanding of course underlies two marvelous aspects of our Catholic Faith: Intercessory prayer and the Communion of Saints. 

How well I live my marriage...can change, on a supernatural plane, all marriages.   We are connected "under the covers" in ways unimaginable.