EXTRA AVOCADO! Sonderegger
Shall I compare thee to a chevrolet?
...the headlamps of your eyes will make them dream.
There are so many reasons! In short, it's when you need a worker of the right colour or want to deny your opponent a worker of the right colour.
Maybe you want higher level cards, maybe you don't want to waste a turn refreshing, maybe you want to stop your opponent activating a big combo or drawing a Level-III card. Those are just some examples.
I came to say what you said. But I say! I knew I'd see you here first.