There is just something about all caps that annoys me.
I don’t exactly know what it is. It’s ugly, but not horribly unpleasing. It’s harder to read, but not unreadable.
Maybe it seems angry or arrogant, as if screaming. But all caps doesn’t necessarily sound that way in my head. Maybe it’s just entirely superfluous. But a lot of things are.
Regardless of the reason, I’m always annoyed when someone needlessly uses all caps in some form of design. It’s high up there on my list of typography pet peeves.