My standpoint from a college student persepective is, weed does not ruin lives, im not saying it does not ruin your ambitions. Ive honestly had in possession enough to put me away for over 5 years and become a felon, I know for a fact that what i sold did not ruin any lives, it was used and abused in a safe manner. I dont see how my 'crime' is equal to that of a ****** deviant or ******.
I even did a little experiment of my own this year during college. For my entire 1st semester i quit smoking completely, after smoking 3 months straight during summer. I managed a 3.8 and am on the deans list. This semester, I began using marijuana again, on a near daily basis, as of right now, i still have a 3.8. I understand yes, there are a lot of other variables in play, but none the less, little to nothing changed. Also, i understand I am also not getting a 4.0 and I'm also pretty naturally smart and weed effects people differently, but when it comes down to it from my own personal perspective, It changed little in my life other than i had a better experience out of college during my second semester over my first. Take it as you like.