Still thanks to technology (e.g. radio, satellite, improved espionage capabilities).
> Western Europe isn’t almost constantly killing itself in endless wars
Once again, thanks to technology. We're now able to do more for less, and many of the motivations for war (resources, land) are no longer as much as a contributing factor.
Look away from your personal circumstances for a minute and consider the trajectory overall, for everyone, and not just you. This Panglossian “optimism” is downright destructive. It feels a lot like being in an airplane which has entered an unpowered, uncontrolled descent, and the guy next to tells you to be happy, it’s a miracle that we’re flying, humans never flew in all of history until recently.