I smoke cigarettes, alot less than many people, but smoking is smoking. I only inhale them into my throat, not my lungs. But the smoke feels like it's tearing my throat, causing micro-cellular damage. This is what I figure causes cancer. With vaping there is none of that. Far less abrasive, if not 100% less. I ordered some juice and am going to get back on my e cig so fufill my physiological craving of inhaling and exhaling smoke. Real easy to see how e cigs save lives.