Example:
For over a decade, the freeway on-ramp nearest my work had two main ways of getting to it from downtown. One of them involved a stop-sign crossing a road that had the right-of-way (i.e. a two-way stop). The other had timed traffic signals. Every evening around 5pm, the traffic would backup from the stop-sign for multiple blocks. Meanwhile the route with lights was completely smooth.
Eventually the stop-sign was replaced with a signal, but I marveled at how many people persisted in making their daily commute much worse than it needed to be.