Love my kids, 420 and foosball
the first step toward a legalization process should be finding a way of establishing if one is in an altered state. the current tests for marijuana say sometime within the last 30 days you've done marijuana.
so that's really no good for finding if someone is driving or operating a crane, etc. impaired.
most people i know that smoke pot aren't impaired for 30 days after smoking. there needs to be a thc/blood level established for impairment, and a non-invasive way to test that level.
i haven't been to any of the countries where it is legal, but i think it's a great idea whose time has come. we have jails that are filled with potheads while killers, child molesters, and much more hardened criminals are being let out of jail, for good behavior or by plea bargain, while the pothead is in for mandatory minimum sentencing.
i think the benefits would be it would put a lot of street dealers out of business, thus some gang activity would cease to exist. kids would have a much harder time getting it. i know some kids can get cigarettes and alcohol now, but it's a lot harder than getting drugs, since most of their friends can get drugs for them, now. we won't even go into the tax benefits.