It helps that Munich, like many other European cities, is an extremely cycle-friendly city. It's so different over here than in the U.S., where cities are not designed for cyclists. Here, most of the streets have designated bike lanes, and sometimes those lanes are actually separated from the street so that there is no need to worry at all about automobile traffic. There are also traffic lights specifically for cyclists (they're so cute- instead of the symbol of a man walking across the street, they are little bicycles that light up green or red at the crossing). There are bike racks all around the city for locking up your bike, and it just ends up that it is often more convenient, and faster, to cycle across town, rather than taking the metro, tram, or bus. It's undoubtedly faster than driving (particularly when you add in the time and expense of finding parking). But it's more than that. While the convenience is certainly a persuasive reason to ride a bike, the two overriding reasons for me to hop on my bike are: (1) everyone else is riding a bike too, so it is just a fun, social activity; and (2) this city is exponentially more beautiful - and somehow how it's supposed to be - when viewed from a bicycle.
Night is the best time. I love cycling across the old town, the centuries-old buildings lighting up the many open squares, the wide boulevards and twisting, smaller streets filled with other cyclists whizzing from one end of town to the other. If I'm feeling stressed, or in any way slightly down, hopping on my bike on a beautiful, Munich evening is guaranteed to cheer me up. It's these moments when I most often have those "I can't believe I live here and this is my life" and "what a lucky person I am" thoughts.
I don't often jump on my bike just to go for a bike ride - usually there are errands involved, or at the very least, a beer garden meet-up. It's just part of everyday life now.