Mouse throw and click to close window

[Greg Till <gregorytill yahoo com>]

When I have a window maximized and want to close the window, I would 
like to do so by simply throwing the cursor to the top right-hand corner 
of the screen and clicking. As it is, I have to aim for the "X" to close 
the window. Throwing my mouse to the top right-hand corner only allows 
me to roll-up the window (and only if I double-click), as is the case if 
I double-click anywhere on the title bar.

Can anyone explain the rationale, if any, behind the inability to close 
a window in this fashion? I realize this is a small thing, but as Nat 
Friedman says, "Small things matter."