"Ça va." translates "It's going well", not "it is".
Similarly, "Ça va?" translates to "Is it going well?".
It's as meaningless an exchange as most greetings (the only meaning being to actually acknowledge and greet the person), but it does mean something literally, and the exchange is technically more complete than when answering "How are you?" with "Hi".
That being said, you'll see someone answering "Salut, ça va?" with "Salut!" quite frequently as well. I would perhaps consider it slightly more of a misstep than in English, but only marginally so.
I also kicked all those habits. I'm curious and I was a bit of psychonaut.
This isn't me defending myself as not having an addictive personality, I'm sure I do, but I managed to stop smoking, coffee, alcohol and marijuana, some of those at the same time. Addiction is a problem that still plagues pretty much every country but even then I wouldn't say I'm necessarily in favor of banning kratom.
My original comment was only to point out that it clearly isn't as benign as a wide range of people make it seem. Of course if you go on the kratom subreddit you'll see addicts praising its benefits and rationalizing all sort of life improvements in the short term, as well as legitimate "success" stories, but most people who kicked the addiction don't repeatedly frequent and post there. I'd think this massive bias to be fairly obvious, but it might be worth repeating (this isn't aimed at your comment specifically).
I don't think the product I bought was unpure, I got it from different, generally reliable, sources (and tried all the shades Kratoms came in at the time).
I fully accept that different people have different experiences coming off of a drug. I should have mentioned in my case that was about 8 months of daily use, although the withdrawal symptoms shown themselves very quickly (less than a month after I started taking it regularly).
I personally feel sluggish the first days if I stop coffee for a while, but even after drinking coffee every day for a comparable period of time, I don't instantly feel the withdrawal creep up on me as soon as caffeine (mostly) leaves my bloodstream.
For added context, at the peak of my consumption I would take about a teaspoon every 4-5 hours (consistently as this was the time it took to feel the cold symptoms again) through tossing and washing (just swallowing it down with some water). I've no experience with Kratom pills and no amount of sugar can possibly overcome the intense bitterness of Kratom tea at that dosage (and I like bitter).
Pot would definitely be second in my list. It's at the complete polar opposite of the addiction spectrum in my experience, and I had no physical symptoms beyond having a harder time falling asleep (incomparable to my experience with Kratom though) but the psychological addiction was the strongest out of all of them. Of course Kratom didn't cause any sort of substantial psychological addition in me, the feeling of warmth and general "feel goodness" I got from it was comparable and probably milder than a cup of coffee after having been off of it for a couple days, and subsided quite quickly after daily use.
As a sample size of 1, and a person who has used a lot of different substances (alcohol, cigarettes, amphetamines, psychedelics, marijuana flowers and extracts), been addicted to quite a few of them, and kicked all of them, Kratom has been by far the hardest drug to stop. After reading online about the potential benefits and mildness of Kratom, I started taking it occasionally, and slowly had to ramp up usage frequency because I would start feeling cold and uneasy when not on it, I pretty soon I had to take it consistently to stay at my baseline level.
I managed to taper off down to a manageable level (about half a coffee spoon every 5 hours), but going beyond that was impossible without feeling the withdrawal effect pretty much full force, I decided it was best to bite the bullet and stop cold turkey.
Extremely cold feeling coming from inside on a very hot day, awful restlessness (which made it impossible to sleep more than 2 or 3 hours a night for the first week, before I had to give up and go on sick leave), the most intense feeling of being devoid of energy both physically and psychologically, and pretty much all the symptoms of a strong cold. The extreme sleepiness and impossibility to fall asleep because of the restlessness is one of the most frustrating combos I've ever experienced, but I'm sure that's all too familiar to opioids users.
If you're trying to kick off an existing opioid addiction (or maybe have some sort of pain where the usual pain meds channel are not available?), this might make it more manageable I'm sure, but all the analogies to coffee or tea as "Just a thing you can take if you wanna calm down a bit" can be extremely dangerous to people that have essentially no need for it, and particularly people with an addictive behavior.
It's as meaningless an exchange as most greetings (the only meaning being to actually acknowledge and greet the person), but it does mean something literally, and the exchange is technically more complete than when answering "How are you?" with "Hi".
That being said, you'll see someone answering "Salut, ça va?" with "Salut!" quite frequently as well. I would perhaps consider it slightly more of a misstep than in English, but only marginally so.