and I can perform any task whilst high better and with more dexterity, precision, attention to detail, or whatever it may be than someone would whilst being drunk. We pretty much have a society built on alcohol and then complain when thousands upon thousands are killed in drunk driving accidents. I just cannot fathom crashing my car due to the influence of marijuana, it just doesn't seem possible.
I understand marijuana as a civil rights issue. I think it should be legalised. I think it's far less harmful than alcohol or nicotine. I think the current prohibition is misguided, causes untold suffering, and is a total waste of tax dollars.
However, this is where you lose me. It is possible.
Driving while intoxicated is stupid. It's an act of almost incomprehensible selfishness that basically shows that you don't care about your community, or other people in general. There is no question that marijuana will diminish your ability to drive. You just can't do that sort of thing and be a responsible adult.
And this unfortunately is probably the only reasonable argument against legalisation -- we don't have technology right now to demonstrate that someone is acutely impaired from consuming marijuana, and it greatly worsens impairment from alcohol intoxication, so that .08 drivers become even more dangerous.
As an aside from the current stupidity, right now I'm living in a European country where the legal limit for driving is .02. So you basically can't drink a beer and drive, or you'll get a DUI. If you even go on a bender on Friday, and wake up Saturday, you've got to wait until late afternoon before driving to make sure you don't end up blowing .03 And you know what? It's fantastic. If I'm going to drive a car, I don't drink. And I give up a tiny little piece of my freedom to be much much safer on the road. The trade's worth it for me.
Oh, and back to the marijuana, child abuse / neglect is not the sole province of the alcoholic. It's entirely possible to let your marijuana dependence affect your children in a negative way.
Just because a lot of the information about marijuana in the public domain is junk science, and politically-contrived propaganda, it doesn't mean that there aren't real concerns.