This is what I believe:

SMOKING cannabis can cause lung damage/cancer... but theres probably a bigger chance of getting cancer from breathing in all those damn car exhaust fumes each day.
Cannabis CAN make you lazy... if you smoke indicas all the time.
But most importantly...
Cannabis is FUN. And at the end of the day, thats what matters, right? Oh, and of couse were all MENTALLY addicted to it. Dont deny it. Its not a bad addiction, like cigarettes or alcohol, but a healthy addiction in my eyes, as long as you dont overdo it. Because at the end of the day, everything we enjoy doing is an addiction. Coming onto cannabis.com - ADDICTION. Drinking coke/pepsi - ADDICTION. Watching TV - ADDICTION. Listening to music at 50,000 decibels - ADDICTION.
Smoking cannabis - ADDICTION.
How I love the herb...