If marihuana is legalized in Korean...

I listened to presentaition about marihuana.
It is very interesting to me because smoking the marihuana is  illegality in Korea. We can buy tabbaco easily and smoke it comfortably. I'm not smoking because it is bad for body. If marihuana is legalized in Korea, I will do opposite. There are some reasons.
First, the reason is that it contains lots of tar rather than tabacco. Sometimes, it can cause various diseases such as inflammation of the brain and pharynx and swelling of throat. Also, continual smoking can cause lung disease or chronic bronchitis, sinusitis and brain disorders. Women who smoke marihuana often experience problems with the menstrual cycle. If women have used marihuana during pregnancy, premature infants with symptoms similar to alcohol can be born and marihuana can weaken function of the male reproductive organs. THC can reduce the number of sperm and sperm activity can weaken.
Second, the reason is that marihuana can stunt sense of balance. For example, people who smoke it walk like a drunk and symptoms apper such as excessive appetite and  headache.
Third, the reason is that mental symptoms can appear. Auditory abilities become so sensitive and you can feel better. But in a few minutes you can get worse. In addition, it causes  unconscious smile.
Forth, the reason is that it can cause many crimes. If you continue to smoke marihuana, you can't make a normal life. So you can easily commit a crime.
For these resons, I wouldn't like it to be legalized and I think marihuana is worse than tabacco.