Aronj, which is probably some 12 year old wannabe, supports the use of illegal, illicit drugs which diversly effect the brain, which can lead to either brain damage or premature death.
Marijuana, if taken too often, will result in addiction, such as any drug. If the supply is taken away, you go mad, you get depressed, you eventually can't take it any longer and you convince yourself that death is the easiest way out. Trust me, I know. You're reading a post by someone with scars all over his wrists, so don't take this for granted.
Marijuana's short-term effects also diversely effect the way you think and react. Smoke some pot and go for a drive, there goes another temporary Australian/American/whateveran. It is more dangerous than alcohol, as it damages your braincells, your self-esteem, your self-respect, and your humanity on a whole.
Still, SURE! LETS SMOKE POT BECAUSE THE GOVERNMENT ILLEGALISES IT! Fucking stupid if you ask me.
Also, more of a reason not to bother with drugs/alcohol in the first place: Its better to be concious and do what you want, rather than be off in pixieland without any real idea what you're doing, without any rememberance, and without any self control whatsoever.
Life is precious. Don't abuse it.
