Yes, you can have a normal life but, for how long? Think of the future, You might get cancer to the lungs or something like that...
lol And what about smoking cigarettes? or Alcohol?. Smoking weed is no worse than them. Infact i'd say it's better. Cigarettes definitly lead's to cancer, there's no exscaping it if your a medium to heavy smoker. And alcohol.... lol do i even have to give an explaination. At the end of the day, if you do anything in moderation then your going to be fine. If you abuse weed, alcohol, smoking then it's dangerous. Then again you could be t-total and one day walk into a bus. You never can tell....