The anti-cannabis people will say it's a "gateway drug" and that it will destroy your life, while some elements on the the pro-cannabis side would have you believe it's some sort of panacea. The reality is that it can cause intense anxiety and paranoia in some people, and some people do get addicted to it. As with every other drug, you should tread carefully and have some amount of self-awareness when using it.
PS: I hope that mushrooms will be made legal at some point. They show a lot of promise for use as antidepressants.