Peace,You are right: but there is a difference between drinking sensibly[two pints over two to three hours and after a meal]and getting blotto,at the present moment the drinking I described[particuarly if you leave 20 minutes to half an hour from the time you have finished your drink ,before you drive].would not put you over the IRISH legal limit.
In the part of rural Ireland[that I live in]there are no trains ,no night buses,and in lots of places, no buses at all,A miniscule amount of taxis per population[who wants to ferry people about when there are much easier jobs available],there are also many boy racers and speed freaks driving like maniacs[even though they are sober] ,it becomes unsafe to walk down a country lane for a couple of miles with these idiots about.The point is seesions and pubs will not be there any more,in rural areas[if the Irish government reduce the alcohol limit further].
I have been driving for thirty five years, have been breathalysed but have always passed,because I am careful about how and when I drink,When Iam driving,
I have also had my house damaged by a speed freak[who was perfectly sober but lost control].
I would have no objection to the limit being lowered if there was public transport/taxis for one to get home,or if it was safe for a person to walk home 4 miles down unlit country lanes[no way with these boy racers about].