Surprisingly, none of these reasons are that it makes bass-heavy hip hop tracks sound great, or that it really brings out the best in pizza. With recreational marijuana now legalised in two American states, political momentum is building up towards full legalisation across the pond. Even here in the UK, experts are now speaking out in favour of the idea in the hope that a political domino effect leads to worldwide relaxation of anti-drug laws following the USs lead. Just in time for 4/20 the pro-dope day being celebrated here as well as in the U.S. here are some of the most persuasive reasons experts offer for why we should free the weed.