One other note that no one else has addressed:

There is a lung cancer risk due to inhaling smoke, or really any kind of small particulates. Burnt organic material is particularly bad, as you’re basically inhaling very fine carbon particles. The lung cancer risk from smoking marijuana seems to be lower than that from smoking tobacco, because tobacco smoke in particular contains many cancer-causing chemicals, but there is also comparatively little research on health risks related to cannabis smoke.

Regardless, the point is not that smoking weed is a particular cancer risk, but that inhaling any smoke or vapor is a cancer risk, and the risk is increased by volume. Firefighters have an increased risk of developing lung cancer due to repeated and extended exposure.

I’m not saying don’t smoke at all - after all, life should be lived. I am saying that you should understand the risks you’re taking, and that they can be reduced by moderation.