Find it strange that planes don't use them more often. I ended up flying BA business once and half their seats are backwards. It was quite novel, takeoff felt a bit weird but besides that no difference.
Went researching it after the flight and apparently reverse seats are far safer for injuries, especially neck and torso related.
Because motion sickness. I can absolutely never sit backwards even on a train, and plane take offs make me queezy as it is. I suspect there are people with much worse motion sickness issues
Military passenger planes often have the seats facing aft. Even when they're the same model with the same chairs as a commercial airliner, they just install them facing aft.
Went researching it after the flight and apparently reverse seats are far safer for injuries, especially neck and torso related.