I must admit I get rather annoyed when I'm on an airplane and children start screaming and acting up; especially on long flights. And I LOVE kids. I try to sympathize with them. They are young and probably very bored or frightened.
My parents often told me a story about something that happened when I was 2 years old (around 1964). We were flying back to Indianapolis from West Palm Beach, Florida. I began screaming and carrying on; in fact I was so loud, the pilot actually came out of the cockpit, picked me up and held me. Nothing worked. They assumed I was frightened because we had just flown through some storms and turbulence.
Later, my doctor discovered I had something wrong with my ears, and he lanced my ear drums to relieve the pressure. So, I probably wasn't screaming on the airplane because I was frightened. I was screaming because I was in pain. The pressure and altitude was probably hurting my ears.