The struggle to find the sole correct side of a clipless pedal can vary between annoying and dangerous when riding off-road.
For most gravel riders, double-sided mechanisms are absolutely worth seeking out, as they double your chances of clipping back in easily if contact is broken over a rough section.
Although single-sided clipless pedals can be exceptionally light and offer great mud-shedding ability, they can also be deeply annoying to reengage when you have unclipped over rough terrain.