Well.. though I'll admit to cycling aggressively, I don't think I've ever ignored a traffic light unless there was literally no traffic around (and even then only when I was in a hurry), and I don't think many cyclists I know do ignore traffic lights very often.

I definitely get not wanting to stop, and I'll try and optimize. For example in Amsterdam there's traffic lights with counters, and as a cyclist you can usually safely go when there's 5 seconds left, but I don't count that as ignoring the traffic light.

Cutting a red light into slow traffic would be very rude.. I don't think that happens a lot here.