What age where you when you started smoking?

I just tried it when I was as young as 19 years boy. I didn't like it anyway, and I never went to do it next time in the life, I still wonder what do or how exactly people enjoy this smoking. Being so much injurious to health every one should avoid this smoking I think. The addiction is difficult to come out late in the life. So if some youths are having this habit should try to come out as soon as possible is my friendly advise.