Nicotine, one of the most addictive substances you will ever know. Nicotine is the reason you continued to smoke after trying it a few times; nicotine is the reason why you have had trouble quitting in the past; and nicotine is the reason why you feel so poorly during the first days or weeks after you have quit.
apparently you take in nicotine in a healthier way and it's healthier for those around you. but bottom line; nicotine is nicotine and there's nothing healthy about it. as well, you have you take deeper breaths in so in the end it's a lot worse for you.