If it is of interest, I actually decided to try Threema as a result of folks recommending it in this thread and like it a lot! Similar functionality to Olvid, but faster & more responsive.
I know it's just memes, but, if anyone is interested in more perspective on this, I heartily recommend the book Bury My Heart at Wounded Knee. It tells the history of the latter parts of the Indian Wars using primary sources (and Native American sources, wherever possible). The result is the story of American expansion from the Native perspective and, while depressing, is also really important to understand.
It conveys the fact that you don't have any life but the one you're given and that you won't ever be happy until you manage to radically accept your circumstances.
Fair enough.