[QUOTE=classical]為什麼退伍軍人那麼多淪落成街上的乞丐呀?[/QUOTE]
I think you meant those enlisted people because officers are a whole different story.
Also, lots teenage kids join so they can get money for college, or they just simply want an amount of money at once. Then they realise that they don't really like their jobs, so they decide to leave without fullfilling their duties, the result is the government has to take the money back from them, and they end up being losers.
This is why, when you decide to join, they would tell you to think really hard. Unfortunately, young kids at age of 17, hardly know what it means to be committed for 4-8 years.