A downsized military will do nothing but make us a very attractive and weak target. The weak are always targets whether it's a predatory nation or a predatory shark in the sea.
A Target to whom?
Which nation on earth is currently capable of attacking us?
If there isn't a country currently capable of attacking us, by all means we should become so weak that anyone can.
At this point, with obumble in the white house, whoever would be interested in attacking us is too busy rolling on the floor laughing at our foolishness in having elected the worst enemy we have had since King George. Why should they do anything when he's doing it for them?