i'm not going to argue the difference between alcohol and THC. i am a heavy user and i promote responsible marijuana usage. much like you guys, it takes alot for me to get a decent buzz on, and the days of a goofy, giggling, world spinning high are behind me. i can't think of anything i can't do high, and i can think of a few things that i can do better with a good buzz. i rarely drink, and when i do, it's 2 or 3 beers max.
but we're talking about responsible usage. nothing you are going to say is going to convince me, a heavy weed smoker and NORML supporter, that getting high and riding your quad is anything resembling responsible usage. in my eyes, what you are doing is working against everything pro-marijuana activists have worked for decades to achieve. Right now, there is legislation being discussed to decriminalize marijuana on a federal level. this is the closest to making it "legal" that we have been since it was criminalized. being blatently irresponsible is like giving a big finger to every person who has stood up and worked to get us to this point.
honestly, i don't know you from Adam, and could give a sh*t less about your physical well being. i'm not trying to save your life or keep you out of harms way. natural selection has been short circuted by the human race and our increasingly imposing safeguards against danger and lack of common sense. If some fool ignores common sense, and dies as a result, well that's natural selection and i won't loose a wink of sleep over it. but it's people who smoke irresponsibly like you speak of that make it so hard for the rest of us to convince the government to reform marijuana laws.