Heroin is a name for correct, me if I'm wrong Diacetyl-Morphine meaning Heroin is literally simply morphine that penetrates the blood-brain barrier causing a quicker and stronger effect especially when it comes to the I.V. rush for Heroin compared to Morphine otherwise they r basically the same drug nearly at least with some subtle differences.
This is objectively true, but must heroin addicts would find it highly offensive, as do I
Morphine tends to give me a histamine reaction. Hard to enjoy the rush when I'm trying to itch my scalp off.
Snorting heroin and shooting it are exactly the same drug, and they are still worlds apart in terms of pleasure. The speed in which it overwhelms your brain makes it or breaks it. For me, IV, morphine 6/10, heroin 9/10, hydromorphone 10/10.
Speaking of hydromorphone, I could make the hyperbolic comparison of hydrocodone = hydromorphone in your brain, thus vicodin and diluadid are equal, but they are opposite ends of the spectrum.