Why doesn't 'Y' behave similarly? I've never understood this inconsistency in the default key bindings:

'c$' OR 'C' = change to end of line

'd$' OR 'D' = cut to end of line

'y$' = yank to end of line

'cc' = change entire line

'dd' = cut entire line

'yy' OR 'Y' = yank entire line