I had such a nasty smokers cough and spit up such nasty brown shit all day, especially in the morning, when I smoked cigarettes. I vape now, and I definitely still feel like it’s harming my lungs, no question about that, but instead of being out of breath all the time, I only get out of breath when I’m actively vaping, and I don’t cough so loud I wake up people two houses down anymore. Quitting vaping is definitely hard though, nicotine intake is instant and higher because there’s no built in “quit” like when you finish a cigarette.