If I get drunk I become happy and will hug my friends and tell them how much I love and appreciate them. Others become aggressive and start picking fights with random people, or beat up their wives, girlfriends, etc. I don't especially enjoy being drunk though; it's alright once in a while, but there's loads of other activities that are on equal footing as far as I'm concerned.
I tried to smoke weed a few times. I didn't just dislike it but downright hated it every single time. I tried a few other drugs, and responses varied from "I don't really like this" to "meh, so this is it, is it?" Never tried heroin, so I can't speak to that specifically.
Point being: individual responses to drugs vary greatly. I wouldn't say I'm "immune" to becoming an addict, but it'll sure take a lot more than for some other people.
I tried to smoke weed a few times. I didn't just dislike it but downright hated it every single time. I tried a few other drugs, and responses varied from "I don't really like this" to "meh, so this is it, is it?" Never tried heroin, so I can't speak to that specifically.
Point being: individual responses to drugs vary greatly. I wouldn't say I'm "immune" to becoming an addict, but it'll sure take a lot more than for some other people.