What's really in cigarettes?

k, dont go posting all that stupid **** from anti tobacco websites. i want to see a real study conducted by an average joe, not just the government telling me what is in there. i would also like to see how much of these "4,000+ additives" are actually in one cigarette. if we just believe the government without questioning it, then we are soooo stupid. they have lied so mant times. but anyway, why does "Big Tobacco" put all these additives in? these chemicals cost money, so there has got to be a reason. and dont say it gets you more addicted, cuz then why wouldn't every company put these additives in their products? dont tell me not to smoke cuz ur wasting both of our time, i just want to know the REAL facts of what i'm putting in my body, not just some **** that everyone believes because the government says so.