I don't really want to get into a slanging match. The issue is not whether you'd be more likely to cause an accident five hours after one glass of wine. Personally I believe the additional risk is minimal, I wouldn't do it but there are obviously people out there who would.
The issue is actually whether you'll be able to dodge the book that is thrown at you if you do. Part of airmanship involves covering oneselfs back in case you screw up. Whether it's commercial or private avaition which you undertake, you'll still end up before the same judge and if the prosecution can hang something on you, they will.
Be careful out there.