I think very few people can actually be "responsible" with it, if you define responsible as basically still being a functional member of society and not doing a bunch of stupid, impulsive shit. But with some things, I guess I can be. Like, I'm not swallowing handfuls of benzos, for example, even though I technically can. But opiates and crack, once I get going, there's no being responsible at all. The last $1000 I spent confirms that fact.