This is true Marijuana is a depressant drug which can explain why people often get depression from using this drug

Not everyone gets addicted and can have self control and be safe

There are plenty of other things people do daily that can harm brain health.

If drug dealer don't have their businesses they might turn to a more dangerous line of crime

Many reports say that marijuana can be a gateway to more addictive drugs

This could also lead to a dependence on the drug which could cause problems later on if they do not have access to the drug.

Altered perception is a big issue. People who may drive after smoking could lead to more accidents.

Smoking anything can harm your lungs this includes marijuana.

Marijuana has helped with nausea, appetite, and with pain while going through chemotherapy

Marijuana has helped many people who are having medical issues such as epilepsy,cancer, and PTSD.

Yes it should be legal because of safety control reasons. People could be buying from sellers who are lacing the marijuana without the buyer knowing which can be dangerous. If there were businesses there wouldn't be as much worry.