Remember the days when your VPN was just there for a giggle, a little extra security, or to stream Netflix from a different country? Ah, nostalgia. Now everyone screams kill switch like its some kind of lifesaver. Tried it in real world tests. Spoiler alert: it either works flawlessly or turns your connection into a featureless ghost town. I once thought it was optional like a fancy add-on, but man, when the tunnel drops for real and your IP leaks like a sieve, you realize how it is. Or not. Depends if your VPN is worth a damn. Tested a bunch, some with panic mode set to high, others just silently fail. Funny how some services leave it half-baked, like they put in the feature just to tick the box. So yeah, the old days of trusting VPNs blindly are over. Now I actually do real tests, not just clicking 'connect' and crossing fingers. My two cents: kill switch might be a lifesaver or just a myth propagated by marketing drones. Pick your poison.