Two of my friends that have been smoking regularly since 7th and 8th grade through senior year have definitely noticed withdrawls. One of my friends strait up quit because of it. Plus he was smoking an ounce a week and noticed it was effecting his mental state and his life socially. He didn't smoke anything for 7 months and said he liked being sober, he eventually started smoking again but not nearly as much as he used to. It wasn't as hard for him to quit as it was for my other friend who has had major anxiety issues/trouble sleeping.
All my friends who smoke heavily agree that cannabis is addictive. Although its nothing near an alcohol or tobacco addiction. There are withdrawls. You just need to fight through a week or two and things will become more normal. Then moderate your smoking habit if you chose to still smoke.
"I love looking at pieces for some reason. Its like collecting Pokemon." - [joe]
"I really only think the reason I have gotten nauseous or a mad head rush is because I milked too big of a hit while not getting enough oxygen. Those are the hits that make sweat drip off your chin." - ElGato