There are some that will abuse anything and everything, legal
As for more harmful, actually it's not. Any kind of abuse is
a bad thing for sure..it's just that pot does not have a tendancy to make people behave violently, and it is actually proven to be non addictive. So in most way's alchohol is far more dangerous. Now, I am not a propenent of making alcohol illegal...if people use if properly it's fine. It's illegal for underage people, which I fully fully agree with.