Because I said so doesn't cut it. How did you determine .10 is appropriate? And why do you suppose most of the world chooses a lower limit?
Neither does "But the rest of the world." You really need to stop it with that one. No one here gives a crap about the rest of the world. It doens't work in your gun ban threads and it isn't compelling in this one either. Regarding how I know .10 was reasonable and appropriate?
- It used to be the standard and IMO worked well balancing the desire of people to drink and being safe driving after doing so.
- I've had my BAC taken at various levels and can tell you from experience that you barely feel .08.
- The news sensationalizes drunk driving accidents, but you rarely if ever see an accident where drunk driving was the cause and the driver was .08 or less. Those stories almost always, if not always, end up with the person having been .15 or some other obscene number no one would ever argue should be legal.
- The only reason it got lowered below .10 in most states was due to federal government pressure and MADD. IOW, it was political.
IIRC you don't drink, so you may not be best suited to have this debate.