Yup, last ~10 years. Never seriously tried to quit because i like it
Since mid 2009 i started with rolling tobacco, i'm buying 100 gram packs for 5.5 euro. One pack lasts approx 10 days. So it's 10 grams per day, standard filter cigarette has ~ 1 gram of "stuff" in it. So in pure weight it's smoking half a standard pack a day. Slim rolled cigarette weights around 0.5 grams. This tobacco is lighter, has a lot more taste, and doesn't have any of "additional chemistry" tobacco companies stuff in when producing filter cigarettes (and that stuff is bad, more bad than nicotine/tar itself).
Up to that point, i've smoked around 8 20-cig packs a week of black Walter Wolf, it has a bit less nicotine/tar than Marlboro, but it's still very strong.
I strongly recommend rolling tobacco for anyone that wishes to cut down the costs, smoke less, and smoke less dangerous substances.
Apart from that, there are two additional factors. How many times did you work on something, and almost subconsciously you reach for your pack, put a cigarette in your mouth and light it up? Well with rolling stuff it doesn't work that way because you need to roll

And after a month you'll be rolling nice slim cigs, it won't take you much effort or concentration to do it. And another issue is that filter cigarettes contain substances that elevate addiction. After dumping those for rolling tobacco, i have a lot less "need" to smoke. For instance, went on a business trip, we were late on schedule and had to drive 5 straight hours, without stopping, on the motorway. It was a no-smokers car, and i didn't feel any need to smoke. Because i couldn't. Thus with this stuff it's more of a psychological addiction than physiological one.
Besides, before '90s people smoked everywhere. It's funny to see historical government cabinet meetings where everyone smokes.
Smoking is bad, nobody denies that. But our modern way of life is more bad. If you smoke, you don't do physical activities and you eat junk food, you're on a good way to screw yourself permanently. That's not my case, so i'm not concerned badly about my smoking issue. You need to give it other way if you're going to take some.
Anyways, i'm going to quit when the time comes. And i don't mean that by health issues. My good friend stopped smoking after 13 years when his son was born. He didn't smoke a single cigarette since.