Very few people object to government regulation of cigarettes. The harm they cause is clearly evidenced and not controversial. So, if there is a safer way of delivering nicotine then there's nothing stopping authorities from hiking the tax on cigarettes to unaffordable levels or making the manufacture and import of cigarettes illegal.
As an analogy, consider if you had a choice of taking your caffeine in a cup with milk and water, or with arsenic and strychnine. It's a bit of a no-brainer really isn't it?