In a nutshell:
Taking hardcore narcotics is an extremely bad idea (i.e. heroin/crystal meth/crack) never met anyone who said the doing so improved their life of made them a better person (one or two might have said that when they were totally smashed on it. lol) Taking lesser narcotics ever is in general not a good idea (i.e. coke/pills) and taking same “lesser narcotics”(I use the term loosely as some can be borderline hardcore narcotics) taking them more than on a rare occasion is a extremely bad idea.
Pot and alcohol is Ok if you don't abuse and don't make it a "crutch".
Psychedelics are worth taking at least once. Psychedelics are less about recreational fun and more about hardcore introspection. Not necessarily fun although can be; unpredictable. Unlikely you will get addicted on but might have a horrible experience or two.
Your gonna do what you are gonna do anyway but be true to yourself on the reasons why you are doing what you do. Don't forget to consider choosing “life” as one of your options.