i think the fact that your sense of smell, sense of taste, and lung capacity come back are strong indicators that it's certainly better for you than smoking, but without the aid of long-term testing, it's hard to say exactly how safe vaping is for you. but when you look at things like fast food and car exhaust, it sorta becomes relative. the dangers of smoking are well known, and the obvious benefits of vaping are reason enough for me to continue, regardless of any unforseen dangers.