Smoking cigarettes is extremely deadly. Each year, it kills 480,000 Americans. But it makes you feel good near-instantly, washing you over with a calming buzz that nothing else quite matches. It also looks cool — at least in the movies. Soon, though, the "cool" factor may be the only thing going for it. The Food and Drug Administration has proposed slashing the levels of nicotine — the drug that actually makes you feel good — in cigarettes so drastically that they'd no longer be able to get you hooked. "By reducing the nicotine level of cigarettes and certain other combusted […]