Swapping discs or mandatory installs? What's worse?

[Hapimeses]

They both suck.

Installs involve a wait to get your game started for the first time. After that, you never feel them again, and you forget until the next one.

Swapping discs is a minor, but never-ending annoyance, so you can never escape it.

Personally, neither is worse. They both suck.