They paid for a seat, they can use it as they wish within its designed and permitted capabilities. You don’t know what time zone they’ve come from or where they’re going, when they sleep is their business. You don’t know what back/ physical issues they may have. If you don’t want to sit behind a reclining seat that upsets your delicate sensibilities don’t buy a ticket that sits you behind a reclining seat that upsets your delicate sensibilities. Who the hell do you think you are to dictate what others should do because you don’t like your own life choices.

Love this!

People are generally born at the same age too.