This is a pretty personal topic for me, as the Church’s teaching on contraception was a big roadblock for me coming back into the Church. Yet, it seemed to me that if I were going to accept the Church’s authority to consecrate the Eucharist through the Mass, I should also accept her authority to say under what circumstances we ought to receive it and when we ought to refrain.
I finally asked God to open my eyes to the truth about contraception, whether it was what I wanted to hear or not. I then re-read Humanae Vitae and began to find wisdom there that I had never been able to see before, such as the fact that St. Pope Paul VI’s predictions about what would happen if contraception were widely accepted seemed counterintuitive, yet they all played out. Now I have come to see contraception as a self-contradictory act that says, “I give myself to you fully, accept this part,” or, “I accept you completely, accept that part of you.” It is a bit like when we receive the Eucharist while in a state of mortal sin – we say to Jesus, “I accept you completely and completely give myself to you, accept in this area of my life.”
I don’t know if that helps, but that’s how I came to accept this Church teaching that I now consider a tremendous blessing.
Regarding purgatory, I never had a problem with that, but going through the Spiritual Exercises of St. Ignatius helped me understand it in a new way. St. Ignatius taught about spiritual indifference and detaching ourselves from the world, but this is tremendously difficult to do. It seems likely to me that many of us will still be hanging on to certain things when we die – sins we are not completely ready to let go of. It seems perfectly in keeping with God’s mercy that he would give us the time we need to work through this, so long as our ultimate desire is to do so and to spend eternity with him. Purgatory, like everything else that comes from God, is a blessing.