I meant speeding in a more general sense of driving faster than what's safe given the circumstances. E.g. you shouldn't get near the all-year limit if there's ice on the road. In dry lit summer conditions with nobody on the road you can drive much faster.

If you are driving during rush hour where everyone is stressful, then idiots will flash headlights, do risky behaviour, etc, that's true. And yeah, driving slightly over the speed limit to be consistent with the traffic around you is generally a good idea. But if they are too much over the limit, it's their doing, not mine, and if the risky behaviour causes an accident in which I'm involved, it won't be my fault if I'm following the rules. Conversely, no judge will accept it as an argument if you speed because of the idiots and you cause an accident.

I personally just let the idiots be idiots. Especially when the limit has a cause, e.g. a construction site or something: they put a lower speed limit for the safety of the construction workers. I won't compromise their safety, not a bit.

Maybe on access-limited highways.

But on (sub)urban streets driving the speed limit decreases the chance of causing serious injury to other road users, including pedestrians, even if it may lead to an increase in the total number of crashes between motorists.