tends to happen when you smoke daily for 10+ years, and have very easy and cheap acess to it although that is higher than my normal intake but not too far off its not like im alone, there are people i know that smoke more than me, i know med patients that suck down bowls all day long and would put me to shame not to mention somone i know that smokes 3-4gs of oil daily, which probably adds up to more than what i smoke in bud and anyone thats owned/used a 2-3 foot gong tube knows 1/8th doesnt last long at all, you can easily snap down over half gram in one hit like its nothing check out youtube man, look for russian hit contest and the guantlet not everyones smoke routine is taking a couple hits from a spoon, there are a LOT of hardcore smokers out there dude https://www.youtube.com/watch?v=UmxrK_20CS8 guy in that vid probably blew through close to an 8th right there, and thats under 2 mins https://www.youtube.com/watch?v=bsuoQXm2xVg
Tolerance has never effected me that much *knock on wood* I can smoke like .2 of headies and be stoned, and I've smoked almost everyday for a year, and once a week for 6 months before that. The thing is, i remember back when I was a n00b, I would buy an eighth of like, high mids, and it could last me all week, between 1-2 friends, getting (semi)stoned everyday. maybe its because I'm so thin.