So I'm going to Prison for 2 years

[L'ennemi.]

Sees hat most poster don't get that being impaired does not mean that you're drunk out of your mind.
Sure you'll feel ok at 0,8. Nobody's drunk at 0,8 and almost everyone will be sure that they can drive without any problems.
But if you truly feel that 0,8 is too low, go to a race track, and try to race sober and then drink till you're at 0,8. Have fun trying to match your best lap!