With all the recent talk about marijuana legalization, here are three videos you might want to watch.
A You Tuber who calls himself Chris Notap posted three clips that illustrate the difference between smoking tobacco, smoking cannabis and vaping. The videos are very well done, and show you the amount of guck that gets into your lungs when you smoke. It's easy to see the difference between smoking and vaping, but as Chris says in one video, this is not a scientific experiment.
If this doesn't make you want to quit smoking, I'm not sure what will.
And the big message here: if you don't smoke, don't start.