420 in Texas

Colorado recently legalized the possession and use of marijuana. I believe Texas should be next to make this move into a more progressive society. Here is why:
1) Far too much money and jail space is spent on arresting people for possession of marijuana. This money and space should be used on people with more severe crimes.
2) Yes, marijuana can be used as a gateway drug into heavier and more dangerous substances, but I believe this commonly happens because people can't get their hands on any marijuana. I also think that once people have broken the law and done something "bad", it's easier for them to rationalize other bad and unlawful decisions. They've already "messed up", so they might as well continue, right?
3) I am not a marijuana smoker, but in my experience, people who use marijuana do not participate in risky or aggressive behavior, unlike people who use high volumes of alcohol, which is legal.
4) The biggest reason why I think marijuana should be legal in Texas is because it can be used to soothe many people with debilitating medical conditions, such as PTSD. My grandfather is a Vietnam War veteran, who suffers from horrible PTSD. His condition alienated him from his friends, family, and the outside world altogether. He would spend days or weeks cooped up in his room, all alone, just him and the horrible memories in his head. In the last few years, some war vets who were friends of my grandfather's told him that smoking marijuana could help his problems. He tried it out, and it worked. I don't mean to say that smoking marijuana magically cured my grandfather, but thanks to it, his insomnia and paranoia have gotten much better, and he's working on getting his life back into a normal routine. I think that many suffering veterans' pain could be eased with the use of marijuana, but most won't even give it a try because of it's illegality. Many veteran's families and friends are disapproving of the idea because it is unlawful and has negative connotations. Marijuana should be legal so that our heroes don't have to feel like criminals just for easing their pain.
(More stories about war vets who found a cure with marijuana can be found here.)