I don't have kids, but if I did I wouldn't want them to start until they were about 17 or 18. Just as long as they don't mess up their lives. I tell them that smoking weed more for recreation rather than something to do all the time. ( That last statement sounds strange coming from me considering I smoke everyday.) Basically I just want them to be careful with it and not get into any hard drugs like meth, crack, etc.