People lost their bitcoin not because of something broken lol.
They throw away / format their computer before making backups.
They forget the long password used to encrypt their wallets.
They keep their paper wallets in a "safe place", and they somehow can't find it afterwards.
... ...
Unfortunately people are not cautious enough with their BTC address
I guess you want to say private keys instead.
Anyway, you are right, people should be more careful in keeping their bitcoin safe (safe from hackers as well as safe from silly mistake lol)
It's exactly what i wanted to say.
I think people should use a computer with no internet connection to be really safe from hackers as well lol