Just because something can kill you doesn't mean it doesn't also have benefits. Ultimately, one can decide for him or herself what's better: living longer, or getting more work done at work.
Not necessarily a trade-off with non-tobacco nicotine.
I fully agree. From what I've read, nicotine itself is not as addictive as smoking, and it's not the part of tobacco smoke that causes cancer. Also, the withdrawal symptoms are typically more mild than caffeine withdrawal.