It may not take that long for him to realize. I'm only 21 and already hack shit up every morning I wake up. I keep 20 ounces in my car so I have something to spit in on the morning ride to work.

I suppose he is at the age where it is cool and that is all that matters. I knew of the dangers when I started and didn't heed any of the advice. I didn't realize how addicted I was till I tried to quite. I still have yet to actually quite.