Is Cannabis a positive?

I've been wondering if Cannabis is good for me. But it seems like Cannabis is likely to seduce the mind's reward system. Instead of the mind relying on it's natural process of reward and making feel-good chemicals, Cannabis can essentially hijack that ability, and the mind might be altered in a way such as that of not being able to be reliant on it's reward system, because as a result of Cannabis, the Serotonin/Dopamine release with regards to stimuli can become uncontrollable, with overall decrease of serotonin and/or Dopamine as the mind can try to regulate itself by trying to find a balance, preventing too much serotonin and Dopamine from being released. It's been seen by other drugs, and there doesn't seem to be a reason for Cannabis to be different.