Soon, I wasn't happy until I picked up an eighth and rolled up a blunt or packed my bowl. When I would stop, I would feel so numb. I soon got depressed, but luckily found a counselor and worked through that dark time with exercise and meditation. People really downplay how damaging getting high all the time can be.
It's strange though, because this doesn't happen to everyone. Some people can get stoned all day everyday and live a very happy, productive life. I wish I was in this category, but nothing good lasts forever.
Other posters have thrown in personal annecdotes in more words but this one is against the prevailing narrative so it's dead.
"There is moderate evidence that cannabis or cannabinoids are effective for: • Improving short-term sleep outcomes in individuals with sleep disturbance associated with obstructive sleep apnea syndrome, fibromyalgia, chronic pain, and multiple sclerosis"
That's not everybody, of course, but it's enough to say that weed can have positive effects on sleep quality.
In the article you cite, cannabis can help when your sleep cycle is _already_ f'ed. But then you have to have a real long talk with yourself and ask why? Why, when there are better medicines to manage sleep disturbance in the short term which actually improves your sleep. (I am genuinely asking, even OTC sleep medicines will work better than weed)
Weed cannot have positive effects for the layperson because it increases time between REM cycles. Again, if your lack of sleep affects your REM cycle (i.e. its already f'd) then you are doing no harm, but you are not doing much good either.
Maybe you missed my original comment. If you are getting a full 8 hours of sleep every night then you should _not_ be drinking caffeine after 4pm. Likewise, you should also NOT drink alcohol before bed. Further, weed, the topic of this thread, should be avoided after 4pm due to its prolonged effects on your body including impact to REM sleep.
That said, seeking to be routinely intoxicated could itself a symptom of something else wrong in their work or personal life. This would be a non-controversial statement to make about "hard drugs", alcohol, video games, risky relationships, etc...
Cannabis changes my perception of time and significantly affects my attention. I would never drive in that state, or even cross the street, I'm sure I'd get hit by a car... I don't think other people are that different.