While I sincerely dislike double posting on purpose, my inability to edit my own post (a problem I experience every now and then) has forced me to add on to my previous message unethically. Game Over... You cannot seriously believe what has come out of your virtual mouth.
Do a bit of research, and you will find that alcohol and marijuana are not good for you. They are, however, bad for you. There is no way on this planet that you will be able to back up the contrary. People think such drugs are bad because they are. They affect your body in adverse ways that change how it functions and, in conclusion, will ruin it with time.