Do you think marijuana will be legal in the USA some day? If so when?

Okay I've done a lot of research and thinking on this subject and there's no reason for marijuana to be illegal. Marijuana is way less dangerous than cigerettes and alchohol behind. Honestly if it was so terrible then why have they partially legalized it for medical use? Marijuana is only illegal because William randolf hurst was a greedy a**hole who used fear and racism to convince people to illegalize marijuana because marijuana could be used to make paper as well as other things and he invested a lot in the timber industry. I've even read in one of his newspapers that smoking marijuana makes you evil like the ******s and wetba**s. Seriously WTF. And if you think about it...if marijuana was never illegalized they'd have been makin paper out of it for all these years cuz it's cheaper. That would have saved countless trees and forest. More trees means more plant life to suck in the co2 in the atmosphere so maybe just maybe if marijuana was never illegalized we wouldn't be facing global warming. So my question is do you think people will realize this and legalize marijuana and if so when will they wake up and smell the chronic?