Most cannabis smokers don't become drug addicts, just like most beer drinkers don't become alcoholics.
Cannabis induces a relaxing, pleasant feeling. Alcohol does too, but tends to more volatile. So even with non-alcoholics, intoxication can cause much more harm in disputes, violence and driving accidents. No comparison in societal harm.
The experience of Portugal, Canada and recent US states that have legalized cannabis is overwhelmingly positive.
Don't be afraid of recreational cannabis, though agree with ramr - ideally don't want the super strong stuff being choofed. Not necessary, an