some of them just speed through the intersection if they consider it safe, I've heard screeching tires a few times, which means they misjudged.

Stopping at every stop sign is a financial pain for a motorist, because MPG drops considerably. So what? Stop sign is a stop sign, it means "stop". The solution to this is not ignoring signs because it's a "pain" but to replace stop signs with roundabouts, like in Europe.