As someone who smoked cigarettes and then quit by switching to vaping and weaning myself off, I can give anecdotal firsthand testimony that quitting vaping was much easier than quitting cigarettes. It's hard to say if some new vapers would have been smokers or not, and I agree that really none of it should be legal. But while any nicotine is legal, my personal experience gives me the opinion that vaping is a product which does indeed provide harm reduction.