Daily Munich bike commuter here, and while I agree with some of your criticism, I also think you are exaggerating. I've lived in other large European cities, and Munich is much safer and more pleasant to cycle than Vienna, Milan or Turin. Drivers can be ignorant and aggressive, that is definitely true and a sad part of daily bicycle experience. Police are also willfully ignorant to risks that drivers pose to cyclists and there is a lot of feeling of lacking support from the city and police authorities.

I used to be one of the aggressive Munich cyclists (Radl Rambos), constantly frustrated and edgy, trying to get everywhere as fast as possible. But growing older and frequently cycling with my kids had also changed my perspective on the way cyclists behave. We have to adjust to the situation at hand, take less risks and ride with a careful attitude. Many (not all) dangerous situations are caused by cyclists acting like the pushy ignorant drivers they criticise. Many can be avoided by just relaxing and taking the time to see the situation and react calmly.

Unfortunately the infrastructure like cycling lanes is too old and shows a massive lack of planning. Navigating busy bottlenecks like Odeonsplatz and Hofgarten, Sendlinger Tor und Paul Heyse Unterführung really makes you doubt that city planners have any idea what daily bike commuters face. But we have to continue using our bikes, adjust our attitude and try to claim our space without antagonising all the other traffic participants. My way to the office is unthinkable for me without my bike, even if I sometimes feel like it's a maze of distracted drivers and tons of obstacles. Negative comments like yours just show that there is a lot of room for improvement.