Well, I am 25 now, but I started smoking at 14. I would prefer if kids did not smoke or vape-but that would be hypocritical of me, as I was drinking alcohol daily and smoking at that age.
Also, I was in the age group where it was legal to buy cigarettes at 16, then the law changed to 18-so for a year something I could legally purchase, I had to get someone else to buy for me, or go to shops that would serve me.
I think generally, teens do whatever they can to fit in, me included when I was one, and I would much rather them vape than smoke-although I do hope that they know their safety, and are not using the cheapest mech and battery available due to funds.