It may just be chemo weariness. But I don't think so.
I am tired of war, and lying, and hatred, and prejudice, and greed, and injustice, and poverty, and hunger, and arrogance, and intolerance.
Jesus' followers are in the world, but not of this world. To be in the world is to be concerned that all of God's people are harmed by the powers of this world and that awareness defines the mission. To not be in this world is to not be seduced by the false ethics and selfish pettiness that surround us.
And some in the church get distracted by made-up culture wars, when the real evil is so damned blatant.
Eugene Peterson renders one of Jesus's last prayers for his disciples in John 17:15-17, "I'm not asking that you take them out of the world But that you guard them from the Evil One. They are no more defined by the world. Make them holy--consecrated--with the truth."
Carmelo Alvarez, in 2011, wrote, "In preaching on the truth of the gospel, there are some challenging ethical questions that might be considered. First, when the Gospel stresses "live by the truth" (3:21 NIV), it means to accept the ethical demand that leads to the doing of the truth in concrete actions. Second, it requires a faithful people to "tell the truth" (Dietrich Bonhoeffer), as a consequence of a conduct and a testimony (15:26) that witnesses to that truth. Third, it calls to a discipleship in solidarity and the promotion of true reconciliation. Today, more than ever, reclaiming the centrality of the truth of the gospel and living the gospel in truth are daring tasks. (Daily Feast, Year B)