I haven't read the next 2 pages, so someone probably beat me to it...
Dude, take it from someone that has seen it happen more than once. I've seen more than one person make those statements and they never made it home. Ever.
You are an excellent example of why the drinking age was raised to 21. And if pot is ever legalized, I think the age should be 21 or 25. Young people (and yes, I know that at 18 you do not think you are young anymore) just haven't seen the consequences of your style of thinking.
I can search the web and find some shit typed on pro drinking websites that would make it sound like drinking doesn't impact my driving. But, we all know it would. Light up all night and all day. Great. Stay off the fucking roads before you become the next news headline.