Kids today can't understand why old folks had a problem with gay marriage. I couldn't understand how old folks had a problem with interracial marriage. My grandparents couldn't understand why Thomas Jefferson owned slaves. Each generation has its blind spots. The next generation will be amazed that Obama enforced the medical marijuana laws even more vigorously than George Bush.
It's the kind of issue that causes giggles among the "very serious people" at places like the New York Times and WaPo. They don't personally know any families that have been destroyed because mom went to prison for violating pot laws. They just remember their college days--and none of their college friends went to prison for hosting pot parties. They don't know any of the 800,000 people arrested for violating pot laws each year. Better to focus on the "real issues," like one possible deserter being swapped for some Taliban leaders.