Why did the guy from Hafnarfjörður walk quietly past the pharmacy?

Why is seeing believing?

Sensory perception is how we understand the world, sight being our predominant sense.

Why does everyone believe the world round?

We're taught this fairly early, for those that travel they experience it, for those who don't it's a harmless belief.

Why do u think if u swim in a lake there wont be a poisonous giant underwater evil purple dragon?

Evidence points against a giant underwater evil purple dragon from a long history of not being there.

Why r ppl not like funny threads?

Some people have different concepts of humor.

Why does no one actively recognize the ultimate perfection of cats?

I've had to clean up hairballs before.

Why not delete Quinn?

Deleting established ideas causes more backlash then slowly turning them into something else. See all reworks.

For one of those, dogs are much better. Sorry.

Seeing is believing because it is one of the only ways we can experience things around us.

There are poisonous giant underwater purple dragons but they aren't evil, just misunderstood. They will only eat people because they think it is a loving action. This also explains why there aren't many dragons left - reproduction is hard when you try to eat your partner before conception, and try to eat your babies later. Most of them have died now, so swimming is safe - natural history lesson for you.