“If anyone comes to me and does not hate his own father and mother and wife and children and brothers and sisters, yes, and even his own life, he cannot be my disciple.” ― Luke 14:26.
Catholicism teaches that you cannot experience the love and goodnees of your god unless you truely and fully hate yourself for not being as good and loving as your god is. The concept of purgatory is the perfect expression of this sacred practice of self loathing.
“Catherine, however, did not see purgatory as a scene in the bowels of the earth: for her it is not an exterior but rather an interior fire. This is purgatory: an inner fire. The Saint speaks of the Soul’s journey of purification on the way to full communion with God, starting from her own experience of profound sorrow for the sins committed, in comparison with God’s infinite love. We heard of the moment of conversion when Catherine suddenly became aware of God’s goodness, of the infinite distance of her own life from this goodness and of a burning fire within her. And this is the fire that purifies, the interior fire of purgatory. […] We too feel how distant we are, how full we are of so many things that we cannot see God. The soul is aware of the immense love and perfect justice of God and consequently suffers for having failed to respond in a correct and perfect way to this love; and love for God itself becomes a flame, love itself cleanses it from the residue of sin.” ― Benedict XVI (2011).