The people standing in line outside Main Street Marijuanaamp;rsquo;s storefront Wednesday morning could have gotten their hands on pot quicker, cheaper and away from the glare of TV cameras. But then they would have missed out on being part of history. Washington this week became the second state in the country to open a regulated recreational marijuana market. Anyone 21 and older may possess as much as an ounce of marijuana under a law approved by Washington voters in 2012.