To be fair , Theresas' brand of Christian philosophy is not the only religious dogma that finds virtue in suffering . Buddha starved himself to death beneath the shade of a tree to demonstrate "right living".
"Life is suffering" - Buddha.
Hinduism and Bhuddism also teach suffering in this life is tied to past life transgressions and must be lived out in order to evolve spiritually :
"Rebirth, Hinduism maintains, is governed by the law of karma. According to this law, man is the architect of his own fate and maker of his own destiny. Karma signifies the way of life, that is, what we think, say, and do and it brings conditioning of the mind, the
root cause of embodiment. It is the mind that produces bodies, gross or subtle. Remaining identified with the body-mind complex, the soul, though ever-free, follows its destiny and, as it were, experiences all pairs of opposites, such as birth and death, good and evil, pain and pleasure. Patanjali (the teacher of the Yoga system), in one of his aphorisms, describes the causes of suffering as five: ignorance, ego-sense, attachment, aversion, and clinging to life. Reality is neither good nor evil. There is nothing in the universe which is absolutely good or absolutely evil, that is to say, good or evil for all time. Good and evil are value judgments made by the individual mind in keeping with its inner disposition caused by past karma. If one asks, why does God permit evil, then the question will come, why does God permit good? According to the Hindu view, good is that which takes us near to our real Self, and evil is that which creates a distance between us and our real Self. The law of karma is the law of automatic justice. It tells us that no action goes without producing its result. The circumstances of our present life, our pains and pleasures, are all the results of our past actions in this existence and in countless previous existences. As one sows, so shall one reap. This is the inexorable law of karma" - Swami Adiswarananda
I think opium is a wonderful plant . Just ask anyone who has experienced true pain relief when they were in agony . Opium poppies will certainly hold an important niche in our horticultural future .