QChristians, tell me why marijuana is bad?

I'm looking for a Christian to tell me why smoking marijuana goes against the teachings of Jesus Christ and the Bible. Please dont say that 1) that it is bad for your health. Living is bad for your health. Eating is bad for your health. Staying in the sun too long is bad for your health. Being a martyr in the name of Christ is bad for your health. My point being, there are plenty of things in life that are bad for your health but Jah doesn't want you to stop living your life because of these things. (If you believe that smoking weed is harmful to your health, you put way too much trust in man made governments and their studies.) and 2) Don't tell me it's illegal so we shouldn't smoke it. The government could as easily make reading your Bible illegal. Would you not read the Bible just because the government says it's bad? Again, if you believe this, you put too much trust in man made governments.