If people kept their dogs in the same condition that most goldfish are, they'd be arrested for animal abuse.
Goldfish are the most abused pet on the planet. A goldfish doesn't belong in a bowl, it doesn't only grow to the length of the tank they're in, and should live 20+ years.
When you keep a goldfish in a bowl, you're doing the same thing as putting a dog in a box they can barely move, while smoke is getting pumped into the box constantly.
Next time you go to Petco or Petsmart, take a look at the fish wall. 95% of those fish will be improperly cared for, and will die a painful and early death.