It also won't fix the problem

It most definitely can. While obviously recreational use is a bit different than having MDMA/psilocybin/LSD-therapy (or ketamine, which is slightly more acceptable for some reason, but works in a different fashion psychoactively so not relevant here).

And then you further realize that you never will feel that way again without drugs.

Lol any other drug propaganda you heard in preschool you wish to share? I've done every single drug you can think of, never addicted to anything except maybe weed a bit (and when I was younger also cigarettes and caffeine), and I've never felt anything even close as powerful as when you properly get infatuated. Because that is honestly a very strong cocktail of hormones and the difference between hormones and neurotransmitters is quite small, some acting as both.

Remember that the first time is always the strongest!)

Also incorrect. Was you first time tasting coffee the strongest caffeine rush you've had, or was it a bit later when you'd got used to it and could binge? Same with alcohol. Except that with serotonergic substances, you don't do that.

One single use can alleviate severely depression on terminally ill patients for months. Literally. That's not those people being high or having some false sense of happiness.

If you want me to get more objective about how it works and why I suggest it to OP, then here. Think of your emotional memory being associative memory, like smells are. You can probably remember what your first gf/bf smelled like, at least vaguely, but if you actually had the taste in front of your nose, it would unlock just tons of visceral memories. Now you had those memories even before having the scent in your nose, but they were sort of "locked" behind the associated trigger. It's not about what is a trigger and what is not, but the general associative nature of it. When you do a serotonergic substance for a sufficient dose, it floods your head with all sorts of those triggers, but the ones that have to do with serotonin, ie good feelings of unity etc orrr on the flipside high anxiety (that's why MDMA with a therapist is preferred to shrooms by yourself, so it actually goes the pleasant route and you don't get a serotonin induced panic response, ie a "bad trip"). And since your brain is flooded, it also unlocks a lot of memories of happy times and contentedness, which in depression just sort of "fade away" because you haven't felt them in a long time and depression is a feedback loop.

Thats why you need a powerful substance to break the loop.

So unlike psychiatrist have been pushing for like 30 years, serotonin reuptake inhibitors (prozac, cipralex, escitalopram, etc) don't actually function well, despite there being a little bit of an idea behind it (as in a correctly identified system, serotonin). The problem is that low dose over a long time won't help, high dose over a short time will. Kinda like setting something on fire. A slightly warm electric battery won't help no matter how long you keep dry grass on it.

Shit analogy at the end but the theories hold true.

I can find more detailed sources but I'm kinda tired and wrote all that already so leave your questions/doubts under this akd I'll adress them tomorrow if you can't find it on this basic wiki which I didn't read currently I've just read a lot over the years and can't be arsed to try and look for specific references rn

https://en.wikipedia.org/wiki/Psychedelic_therapy