I'm a bit torn on the issue. I'd say that when a drug has become commonplace enough in a society that people use it often and its socially widely accepted, then it should be made legal as in this case illegality is just wasting money. This, I feel, is the case of kannabis/marijuana in most Western civilizations.
However, rarely used drugs, some of which can be very addictive, should perhaps stay illegal as then legalizing might only inspire more use and more lives ruined.
I understand the civil liberties point as well though.
After Nadal beat Monfils at Doha, before AO 2014
lol, who will beat him? Wawrinka? Berdych? Gulbis? Rosol? Federer?
Only Del Potro can take him out before the semis, and he won't. Nadal is winning the AO, bet your house on it.
Somewhere out there, there is a homeless person who once took betting advice from GSMnadal