Hydromorphone feels fucking amazing, it's true. My first time getting high on opiates was snorting 2mg dilaudid, and it felt better even than my experiences smoking heroin or opium, and there's been times I've shot dope and gotten less high than that experience. IVing that shit is so addictive that I don't recommend anyone do it ever. It's the crack of opiates. And if you get dependent on that shit, boy are you in for some nasty WD. Be careful dude, that stuff is devilish. It's got IMO the strongest rush out of any opioid, but no legs, which makes it easy to compulsively redose. The needle is not something to play around with, if you're not already dependent, you're really just asking for an addiction shooting dilaudid. Think about whether it's worth becoming dependent on something that could effect your entire life, potentially for the rest of it, for the very short high. If you haven't gotten addicted now, you will, slowly, but not that slowly. Best of luck.