I dipped for about 15 years until I saw a guy that had lost the lower half of his face from cancer. He dipped and chewed tobaco for many years until his little encounter with cancer.
It really hit home with me because my dentist had told me a few weeks prior that I had precancerous lesions in my mouth. Thats been about 20 years ago and I still pray that my youthful indiscretions and stupidity don't come back to haunt me.
Why start something that is so dangerous?