This is an interesting topic. Drugs should be legalized because they are similar in smoking and alcohol, that is they are harmful, but some of them do serve medicinal properties. For example, the painkillers I take are also a common street drug. Legalization would be excellent for money, although it would be hard to get people to go along with it, but seeing smoking and drinking can encourage it I guess. A majority of people do them anyway, so why not. Having the same laws like drinking would be good too.
Now if you'll excuse me, I need a cigarette.