You're not quitting smoking, you're changing the delivery method for your addiction. Maybe it is safer, maybe it isn't, I don't personally care but it's certainly not a good thing to get kids to start regardless or not if it's a gateway to cigarettes nor is it a good thing to keep doing instead of smoking. The desirable outcome is to stop undesirable and harmful behaviors altogether. To call this potentially one of the best good news of the 21st century is ridiculous. It's not a cure, it's a crutch like nicotine gum or patches.