I was on a trip with a friend for his first flight. He jolted at some standard turbulence. I was a stupid 21yo kid and found it amusing. I regret chortling at that moment.
If you think about it, it's pretty stunning that the tiny object that you see in the sky has >100 people within, just hurtling through the air. I like to stop and appreciate how incredible that is. Seriously, we're pretty sophisticated. Except for all the ways in which we aren't.
This is the reason flying makes me nervous. People panic very easily on flights and panicked crowds in confined spaces have been known to squish people to death.
I don't think a flight has ever had a crowd crush event.
The largest passenger plane is an Airbus A380 with a typical passenger capacity of 575. And that's split between two decks. Most crowd crush events involve twice that amount of people all heading the same direction while the people in front have nowhere to go. And most crowd crush events are a result of building code violations such as emergency exits that open inwards.
Planes don't really allow for crowd crushes to happen. Every person would have to be trying to get to the same emergency exit at the front of the plane, and if you're mid flight why would anybody be trying to get to any exit?
Just stay in your seat and it's highly improbable to be crushed to death.