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.
This has nothing to do with whether I agree or disagree with your premise. It's the delivery of the message that you need to improve if you want it to come across in a way that is productive.
Oh totally, war was much less dramatic before atomic bombs. /s
Edit for substance: Tech is a massively double-edged sword, and looking only at the benefits is dishonest. You have nuclear power, which is truly amazing, and nuclear weapons, which may yet end us all. You have vaccines, but also biological weapons, medicines and poisons, better plows, better swords. You can argue that tech is a net positive, but if it’s anything, it is dramatic.