Have you done MDMA AND heroin/Meth? More important meth. Because these drugs have a huge overlap when you examine the physiological effects. Pleasure, love and bliss are generated by the same chemical.
I don't know of, first had or by proxy, another drug as gentle and wonderful as mdma.
It is my drug of choice, maybe once or twice a year because I feel it is unique in the ones I've tried. The risks are worth the reward.
Many substituted phenethylamines are psychoactive drugs, which belong to a variety of different drug classes, including central nervous system stimulants (e.g., amphetamine), hallucinogens (e.g., 2,5-dimethoxy-4-methylamphetamine), entactogens (e.g., 3,4-methylenedioxyamphetamine), appetite suppressants (e.g. phentermine), nasal decongestants and bronchodilators (e.g., pseudoephedrine), antidepressants (e.g. bupropion), antiparkinson agents (e.g., selegiline), and vasopressors (e.g., ephedrine), among others. Many of these psychoactive compounds exert their pharmacological effects primarily by modulating monoamine neurotransmitter systems; however, there is no mechanism of action or biological target that is common to all members of this subclass.
There is a bit of overlap on feelings but Molly isn't like straight amphetamines and opiates don't feel the same at all. If I had to try to correlate the feeling of these substances to sober feelings here is what I would say. Amphetamines are like the anticipation/anxiety of a big event or meeting a new love. MDMA is like being in love, but with everything and everyone. Opiates are like a really long, whole body, orgasm. Just pure euphoria.
Cocaine feels very different to MDMA and heroin is different still.
MDMAs effect is one of filling your brain and body with love, bliss, sexuality and euphoria. Every sense you have is now coloured with absolute pleasure.
That's a very specific feeling. Comparing the effects of drugs in a way that judges their relative value is usually not helpful.
For example MDMA isn't hallucination inducing like LSD.
Other drugs transport your consciousness to completely alien experiences of space and time.
MDMA isn't like that. You're still you and your experiences, experienced through a new lense of pleasure.
There is always overlap, the palette of chemicals to alter in your brain is limited and these drugs alter often the same ones in different ways.
It isn't the drug that is important, but the experience. That's subjective and as tricky as judging the beauty of art.
Cocaine for example is fun. It feels good. You're energised, uninhibited, and combined with alcohol products enhanced euphoria. But if cocaine is Jackson Pollock then MDMA is Georgia O'Keeffe.