It's a bummer to hear you can't enjoy cannabis anymore. :/ I have done a decent amount of reading and research on THC due to my interest and love of the herb. Thank you for posting.

To be honest, I haven't read too much on the effects on people with mental disorders. This is just a theory, but it might have to do with the age at which you started using. In middle school the human brain is still very much developing. Use can affect the way the brain grows and if there is a mental issue present or likely present, it could have more intense adverse effects. In general the human brain should be developed enough to start using cannabis at age 16, but that's the earliest. I almost feel bad for kids who take high levels of THC due to cancer, seizures etc. because it will likely affect the way they can use recreationally when they are older. CBDs don't carry the same risk.

You mentioned "molly", which can be a very dangerous drug especially if you become dehydrated. I don't use or plan to try MDMA but for those who do, SMOKE FIRST! THC has been shown to prevent MDMA neurotoxicity, at least in mice.
http://journals.plos.org/plosone/article?id=10.1371%2Fjournal.pone.0009143