Don't see nicotine as an evil. Don't mix it up with tobacco combustion. In moderation, nicotine can be good. I have posted this up before. I'll do it again here.
http://guidetovaping.com/2012/01/the-prominent-side-of-nicotine/
http://guidetovaping.com/2012/01/the-prominent-side-of-nicotine/