If we're on the effects of smoking train, my next door neighbor smoked so much she has to have an oxygen supplement/tank hooked up all the time. She still smokes anyway. My maternal grandfather also died from cancer that was exacerbated by smoking.
Honestly, we probably sound like fear-mongers :p But really I haven't smoked so I don't know what possible upsides it would have, if any. But I do know it's an expensive habit, is addictive, and over time can affect your organs, appearance, the house/furniture you live in, and/or the people around you. If you're an adult/legal age in your country, sure, it's your choice. But it's not really all it's cracked up to be is it?
Also, why bring it up and wiggle around the topic like you're trying to let us know about it? :p
(that's my two cents; I'm done now)