Step away from the television.
What problems will legalizing pot cause? None. Less kids will use it and they won't get stuff mixed with other drugs, but most of us think of those as positive things.
What harm does it being illegal do? It breaks up countless families and ruins people's lives every day by putting them in jail for doing something that doesn't harm anyone and is a lot better for you than alcohol or nicotine. If you're in favor of outlawing pot you have to be in favor of outlawing those two as well, or else you're an unapologetic hypocrite.
You'd be singing a very different story if you were black and your 18 year old son was facing 5 years for having 2 grams. That's in addition to the fact that hemp could essentially replace plastic in over 50% of the products it's used it, cutting our dependance on oil and the amount of non biodegradable waste we produce drastically. But the government says it's bad, so you may as well keep your fucking head six inches up your ass and think anyone who disagrees with prohibition is a stupid pot head. Pot was made criminal though a propaganda campaign in the 1930's because DuPont had just invented plastic, and the only purpose it serves today is keeping poor people in jail to be used as slave labour. Rich white kids from the suburbs do not go to jail for pot, poor blacks do.
If you don't think Hemp is an unbelievably useful source of fiber and fuel given to us by God to USE, then you're a fucking idiot because you're leaving $100,000 on the table:
http://www.jackherer.com/.
"I have given you all the world's plants and herbs to use"
-God
That's from that book, you know, the one stupid people listen to all the time. The Bible, that's it.
Jackass.