Getting up to speed from a stop feels super slow and takes a bunch of energy. Combine that with cycling being a game of energy conservation, and the result is that slowing down to a stop feels like an utter defeat in a video game.

With that mentality, one can see why so many cyclists disregard safety around intersections and stop signs - mentally, the feeling of doing an unsafe thing doesn't suck as much as the feeling of "losing" (even if it's just an emotion not grounded in any logic or reason). Regardless of whether it's logical or not, there's also this: https://en.wikipedia.org/wiki/Idaho_stop