"It's not about being involved in regional, relatively minor conflict, but about avoiding annihilation. I did not say we have had no war, I said we have had no global wars of the scale seen fairly frequently until WWII."

Global wars were fairly frequent? Perhaps in the 20th century, but throughout history most wars have featured only one or two nation states or uncoordinated resistance to the rise of empires. WW1 and WW2 were anomalies, we hadn't seen anything like them before or since. If the only recognisable form of war is now a world war, do we have to discount the smaller, more frequent skirmishes that are found in every known era of our time on this planet?

"TL;DR: We live in a period of unprecedented peace, even if it doesn't look like it looking at TV. Most Western countries even abolished national service... Nuclear weapons and MAD are a very likely contributing factor."

For Westerners, yes, but that's not exactly universal. There are some areas of the world that are a real mess, including parts of Latin America, Africa and the Middle East (plus North Korea in Asia).

My personal opinion is that people barely think about nuclear proliferation any more. Bar a few scare stories about Iran and North Korea, the common view seems to be that it was a Cold War era problem. No country would get away with using them anymore, so they're not seen as much of a threat. Furthermore, conflict frequently happens at a level where such weapons would be complete overkill (that's all the time really, but I doubt we'd ever accept their use on anything less than a global war). Yet, people still die from conflict every day. There are people alive today that will be dead next week because of conflicts stirred up by the actions of the Western world (and I'd include the 'war on drugs' and 'war on terrorism' in that list). What do we do about that?