It's simply no contest. Most deaths are and always will be from disease. This is, as always, my opinion based on what I know about the subject. War in some form is a likely outcome in the future. I agree on this last point.
War is very highly likely.
If an old word is no longer relevant and the media frequently use it to mean something which is similar, people will use the new word, especially as we have no historical basis to remember the old word in NoAmerica. Forced suicide is regarded as murder around here. Such a confession was unbelievable even 10 years ago. Most studies show that areas where women earn similar wages and have similar education to men have greatly lower rates of such things as bride burnings, partly because the economic incentives are different, influencing the cultural norms.