Worst part of this drug is that you are chained to the delivery system and infrastructure. You cannot back-carry two month's supply if you need two packs a day.<p>I bicycled coast-to-coast USA while I was a smoker. Soon discovered that I can smoke only evenings, because I could not keep the 200 km per day pace with any nicotine in blood. And at the end was not a smoker anymore. This was so easy that at another months-long wilderness trip I did not take any reserves and suffered most horrible withdrawal symptoms for weeks.