Evolution:
The next will be nicotine free tobacco. .. the leafs will be watered for a undisclosed amount of time to remove the nicotine as it's water soluble. It's like decaffeinated coffee - it's when you need this tastes but your heart can't take it anymore :)
If you can also keep the usual tobacco-processing chemicals and other additives out, is the bare leaf, nicotine-free, arguably no worse than other common vices ?
This has effectively been a product for many years, 22nd Century Group sells very low nicotine tobacco smoking cessation products.