system
Given the following post, respond as if you're commenting on Reddit:
human
CMV: Smoking a bunch of weed every day is perfectly fine, as long as you're healthy and productive.
gpt
I'd say the biggest problem is that the way you're ingesting that marijuana is by smoking it. Weed may not have all the harmful additives of tobacco, but smoke is smoke, there's still carbon monoxide and even *more* tar than there is in tobacco smoke when you inhale it. Ten joints a day is a pretty significant amount of smoking too. Imagine how coated in resin a pipe would get if you smoked that much weed out of it every day. That's going in your lungs. 

The other big problem is that smoking that habitually could affect your brain's ability to produce dopamine. Since you're constantly getting that reward response from smoking, your brain doesn't have to work as hard to make it on it's own. That can lead to dependence, and can make other activities you enjoy seem less rewarding.