Nightmares were the worst part for me. Cannabis prevented me from really dreaming for several years so every dream was super vivid for the first few weeks after I stopped smoking.
That and learning to enjoy things sober again. Movies/tv shows are harder to pay attention to when not high. The first few weeks they were painfully boring.
from my experience I could simply outright stop and be fine with it. I might want later on, I might not, but it wasn't physical dependency.
what I realized many years ago is that getting "high" is, imho, actually overdosing. you should treat it like any other drug. let's say you wouldn't want to overdose on ibuprofen for example, or sleeping pills. you could but the outcome reverses to negative.
so the same is for cannabis, you want to hit just the sweet spot. the problem is that every strain is different, it is also heavily based on your situation (e.g. same amount could have very different effects if you're hungry/thirsty or even just in a different mood; same with different strains) and these (more often than not) don't come with a prescription and well defined dose.
you would be surprised how little it takes to "overdose" (according to my definition, ie. get high) and how little you actually need to gain the positive effects while avoiding negative effects. for that I realized smoking socially helps a ton, but you still need to be accountable for yourself.
personally I rarely smoke weed now since I very rarely get net positive effects. when I do it performs miracles, but more often than not it's neutral or net negative effect. maybe it changes with age. a lot of people say they remember it differently from when they were younger.
If you're smoking all day and quit cold turkey, you'll be cranky for a few days either way. The craving for nicotine never feels completely gone, unlike cannabis. (Neither were as hard as alcohol.)
Quitting/pausing the use of cannabis has some immediate benefits compared to nicotine, more energy, fewer mood swings, your dreams come back.
I've voted twice to (successfully) repeal prohibition laws in states I've lived in, and would do it again.
Cannabis dependency is real however, and it's the "safe" drug compared to, say, heroin; but I'd recommend taking breaks, or consider stopping.